AISI/SAE(*) 4130 and 4140 grade steels are low-alloy steels containing chromium and molybdenum as common composition elements. Both are are popular steel materials due to their properties. AISI 4130 grade steel shows good overall combinations of strength, toughness and fatigue strength with good atmospheric corrosion resistance while AISI 4140 grade steel features a high fatigue strength, abrasion and impact resistance, toughness, and torsional strength. Both alloys are weldable with the use of all conventional techniques (AISI 4130 alloy's lower carbon composition compared to AISI 4140 allows easier welding) and machinable in the annealed condition. To make them stronger they need to be subjected to heat treatment, such as annealing, cold working, etc. 4140 and 4130 grade steels are wideky used in aerospace, oil and gas, automotive, agricultural and defense industries.

AISI 4130/4140 alloy steel sheets/plates are offered as part of AVIATIONEU NEW ERA product lines for a wide range of uses. Sourced from quality producers, they are cold rolled to increase their strength and produced in accordance with ASTM specificatiions. Competitively priced and offered in different thicknesses (0.2-4 mm or 4-60 mm or 60-115 mm) and cut to order widths (500-1500 mm  or 600-3000 mm) and lengths, they consist a cost effective solution when large quantities of such sheets are demanded. Unit of sale is 1 Ton (US or Metric as specified) with Minimum Order Quantity (MOQ) 1 Ton. Sea/sea-surface transport to customer destinationcan be provided. Approximate time for shipping: usually 1-2 months from the time of order payment depending on the ordered quantity. Appearing price is indicative per unit of sale.  

For additional information, please refer to the attached comparison table of specifications for different steel alloys or contact us for quotation.

(*) American Iron & Steel Institute (AISI), Society of Automotive Engineers (SAE)

Steel alloy 4130 (ST4130), also known as Chrome Moly after the 2 key elements of its composition, chromium, and molybdenum, is a general-purpose alloy steel widely used by the aviation and motorsports industries due to its weldability, fabrication, and mild hardenability in all offered forms (tubes, bars, sheets and plates). They are available in two different material states (Normalized and Annealed) depending on the process of how the material is heated and cooled.

The Normalized condition (sometimes referred to as "Condition N") is the harder and stronger condition and is best used when forming is not needed. Normalizing relieves internal stress on steel and improves toughness in steels that may harden after the cold working process.

The Annealed condition (sometimes referred to as "Condition A") is the softer and formable condition and is best used when forming is needed. Annealing relieves internal stresses, softens and makes the material more ductile.

4130 steel bars/rods are offered as part of our own branded (AVIATIONEU NEW ERA) product lines, featuring good strength and weldability without compromising steel abrasion or impact resistance. They do not require further heat treatment and are commonly used in structural applications, including gears, fasteners, and some aircraft exterior. Offered in Normalized condition and Cold Finished as indicated by the letters "NRZ" and  "CF" respectively in the product reference code (SKU). These bars/rods comply with ASTM -A108, AMS -6348, AMS -6370 & AMS/MIL -S-6758 specifications. Available in different diameters and lengths in inches. Unless otherwise mentioned, there is additional cost if manufacturing test reports are required.

For additional information, please refer to the supplied documentation, the individual product presentations or contact us.

Steel alloy 4130 (ST4130), also known as Chrome Moly after the 2 key elements of its composition, chromium, and molybdenum, is a general-purpose alloy steel widely used by the aviation and motorsports industries due to its tensile strength of 90,000 psi, weldability, fabrication, and mild hardenability in all offered forms (tubes, bars, sheets and plates). They are available in two different material states (Normalized and Annealed) depending on the process of how the material is heated and cooled.

The Normalized condition (sometimes referred to as "Condition N") is the harder and stronger condition and is best used when forming is not needed. Normalizing relieves internal stress on steel and improves toughness in steels that may harden after the cold working process. The Annealed condition (sometimes referred to as "Condition A") is the softer and formable condition and is best used when forming is needed. Annealing relieves internal stresses, softens and makes the material more ductile.

4130 alloy steel (Chromoly) tubes exhibit an excellent strength to weight ratio, they are malleable, very easy to weld, resistant to scaling and oxidation and have a clean, smooth finish on both the inside and the outside of the tubing. Square tubes are offered in Normalized (N) condition as part of our own branded (AVIATIONEU NEW ERA) product lines and conform to SAE AMS-T 6736 & AMS 6360 M(*) specifications. They can be furnished in different wall thicknesses, widths and heights in inches and in different pre cut lengths from 1 foot to 12 feet. Appearing selling prices are per foot of cut length. Unless otherwise mentioned, there is additional cost if manufacturing test reports are required. For additional information, please refer to the supplied documentation or contact us.

(*) Aerospace Material Specifications (AMS) established by the Society of Automotive Engineers (SAE).

AVIATIONEU NEW ERA Chrome Moly 4130 grade steel seamless round tubes are sourced from certified manufacturers, they are competitively priced and can be used in aerospace and industrial applications. They are offered in different wall thicknesses (2-200 mm), outer diameters (25-450 mm) and lengths, 10 mm (0.01 m) - 9000 mm (9 m). Depending on selected prroduct they comply with different AMS, ASTM or MIL specifications. Unit of measurement is 1 US Ton with Minimum Order Quantity (MOQ) 1 US Ton. They can be sea or sea/surface transported to the customer destination. Approximate time for shipping: 2 months from the time of ordering and payment receipt. Appearing price is indicative per unit of sale. Please contact us for quotation.

Steel alloy 4130 (ST4130), also known as Chrome Moly after the 2 key alloying elements, chromium, and molybdenum, is a general-purpose alloy steel widely used by the aviation and motorsports industries due to its weldability, fabrication, and mild hardenability in all offered forms (tubes, bars, sheets and plates). 

4130 alloy steel sheets are offered as part of AVIATIONEU NEW ERA product lines for a wide range of uses including structural applications, including gears, fasteners, and and aircraft exteriors. These sheets offer good weldability without compromising steel abrasion and impact resistance and can be made even stronger throough heat treatment.AVIATIONEU NEW ERA 4130 alloy steel sheets undergo a heat treating process and they are available in two different material states, Normalized or Annealed,  depending on the process of how the material is heated and cooled. The letters "NRZ" and "ANL" specify respectively Normalized or Annealed state in our Reference Codes (SKUs) for ordering of materials.  4130 Annealed steel sheets are produced to the aerospace specification AMS-6350 (sometimes referred to as "Condition A") while Normalized ones meet aerospace specification AMS-6345 (also known as "Condition N"). Annealed steel sheets are "softer" than their normalized steel counterparts and offer higher workability. Normalized steel sheets offer a higher strength tolerance.

Sourced from quality producers, these sheets are offered in different thicknesses and specific widths and lengths in inches. For additional information, please refer to our supplied documentation, the individual product presentations or contact us for quotation.

Steel alloy 4130 (ST4130), also known as Chrome Moly after the 2 key elements of its composition, chromium, and molybdenum, is a general-purpose alloy steel widely used by the aviation and motorsports industries due to its weldability, fabrication, and mild hardenability in all offered forms (tubes, bars, sheets and plates). They are available in two different material states (Normalized and Annealed) depending on the process of how the material is heated and cooled.

The Normalized condition (sometimes referred to as "Condition N") is the harder and stronger condition and is best used when forming is not needed. Normalizing relieves internal stress on steel and improves toughness in steels that may harden after the cold working process. The Annealed condition (sometimes referred to as "Condition A") is the softer and formable condition and is best used when forming is needed. Annealing relieves internal stresses, softens and makes the material more ductile.

4130 alloy steel (Chrome Moly) seamless round tubes are offered as part of our own branded (AVIATIONEU NEW ERA) product lines in Normalized (N )  or Annealed (A) conditions indicated by the letters "NRZ" and  "ANL" respectively in the product reference code (SKU). They have been for years the standard of the aircraft industry. These tubes offer good strength and weldability without compromising steel abrasion or impact resistance and can also be made even stronger through heat treatment. They are commonly used in in structural applications, gears, fasteners, and aircraft exteriors. Tensile Strength: 90,000 PSI. Available in a range of outer diameters, wall thicknesses and pre-cut lengths in inches or cut to order (CTO) lengths of 12 inches (1 foot)) or multiples. Apperating price of CTO tubes is per foot (12 inches). Depending on the supplier, they comply with different standards/specifications, such as MIL-T6736 standard or ASTM/A S1906 specifications. Unless otherwise mentioned, there is additional cost if manufacturing test reports are required. For additional information, please refer to the supplied documentation or contact us.

Seamless 4130/4140 alloy steel tubes/pipes are offered as part of AVIATIONEU NEW ERA product lines in rectangular or square shapes. Produced as cold drawn & cold rolling the tubes are intended for use in structural applications. These tubes can be delivered in different options (A.W.H.R. "as welded" from hot-rolled steel, A.W.C.R. "as welded" from cold-rolled steel, S.D.C.R.  "sink-drawn", cold-rolled steel, M.D. mandrel drawn or S.S.I.D. special smooth inside diameter). Sourced from quality producers, they conform to ASTM A519 specifications and can be furnished in the following ranges of wall thicknesses, outer dimensions and cut to order lengths:

Square Tubes  

Outer Dimesion (O.D.): 20-20 to 500-500 mm,

Wall Thickness  (W.T.): 1-24 mm,

Cut Length (L): Cut To Order - max12000 mm (12 m).

Rectangle Tubes 

Outer Dimesion (O.D.): 20-30 to 400-600 mm,

Wall Thickness  (W.T.): 1-24 mm,

Cut Length (L): Cut To Order - max12000 mm (12 m).

Unit of sale is 1 Ton (US or Metric as specified) with Minimum Order Quantity (MOQ) 3 Tons. Sea/sea-surface transport to customer destination can be provided. Approximate time for shipping: usually 1-2 months from the time of order payment depending on the ordered quantity. Appearing price is indicative per unit of sale. For additional information please refer to the attached chart or contact us.

Steel alloy 4130 (ST4130), also known as Chrome Moly after the 2 key elements of its composition, chromium, and molybdenum, is a general-purpose alloy steel widely used by the aviation and motorsports industries due to its weldability, fabrication, and mild hardenability in all offered forms (tubes, bars, sheets and plates). They are available in two different material states (Normalized and Annealed) depending on the process of how the material is heated and cooled.

The Normalized condition (sometimes referred to as "Condition N") is the harder and stronger condition and is best used when forming is not needed. Normalizing relieves internal stress on steel and improves toughness in steels that may harden after the cold working process. The Annealed condition (sometimes referred to as "Condition A") is the softer and formable condition and is best used when forming is needed. Annealing relieves internal stresses, softens and makes the material more ductile.

4130 alloy steel (Chrome Moly) seamless round tubes are offered in Normalized (N )  or Annealed (A) conditions as part of our own branded (AVIATIONEU NEW ERA) product lines. They have been for years the standard of the aircraft industry. These tubes offer good strength and weldability without compromising steel abrasion or impact resistance and can also be made even stronger through heat treatment. They are commonly used in in structural applications, gears, fasteners, and aircraft exteriors. Tensile Strength: 90,000 PSI. Available in a range of outer diameters, wall thicknesses and pre-cut lengths in inches or cut to order (CTO) lengths of 12 inches (1 foot)) or multiples. Apperating price of CTO tubes is per foot (12 inches). Depending on the supplier, they comply with different standards/specifications, such as MIL-T6736 standard or ASTM/A S1906 specifications. Unless otherwise mentioned, there is additional cost if manufacturing test reports are required. For additional information, please refer to the supplied documentation or contact us.

Steel alloy 4130 (ST4130),aka Chrome Moly,after the 2 key composition elements,chromium & molybdenum,is a general-purpose alloy steel widely used by the aviation and motorsports industries due to its weldability, fabrication and mild hardenability in all offered forms (tubes, bars/rods, sheets and plates). Available in two material states (Normalized and Annealed) depending on the process of how the material is heated and cooled.The Normalized condition (aka "Condition N") is the harder and stronger condition, best used when forming is not needed while the Annealed condition (aka "Condition A") is the softer and formable condition.

4130 steel bars/rods in round, rectangullar (flat), square and hexagonal shapes (cross sections) are offered as part of our own branded (AVIATIONEU NEW ERA) product lines. Sourced from quality producers, most of these bars/rods are produced, unless otherwise specified, as “Cold Finished Normalized” (aka “Condition D4”), indicated by the letters "NRZ" and  "CF" in the product SKUs.They are widely used in a variety of applications due to their excellent strength to weight ratio,weldability by all conventional methods and resistance to scaling and oxidation. 

AVIATIONEU NEW ERA 4130 Steel Alloy Rectangular (Flat) Bars/Rods are AMS S 6758 Condition D4 (Cold Finished Normalized) and Tempered MIL S 6758, unless otherwise specified. They are offered in different widths, thicknesses and pre-cut lengths in inches.  Also available in cut to order lengths (please refer to the respective product presentation).  It's best to keep the lengths under 5 feet for air shipping. Longer bars can only be shipped via standard sea/ground transportation.

Unless otherwise mentioned, there is additional cost if manufacturing test reports are required. For additional information, please refer to the supplied documentation, the individual product presentations or contact us.

AISI/SAE(*) 4130 and 4140 grade steels are low-alloy steels containing chromium and molybdenum as common composition elements. Both are are popular steel materials due to their properties. AISI 4130 grade steel shows good overall combinations of strength, toughness and fatigue strength with good atmospheric corrosion resistance while AISI 4140 grade steel features a high fatigue strength, abrasion and impact resistance, toughness, and torsional strength. Both alloys are weldable with the use of all conventional techniques (AISI 4130 alloy's lower carbon composition compared to AISI 4140 allows easier welding) and machinable in the annealed condition. To make them stronger they need to be subjected to heat treatment, such as annealing, cold working, etc. 4140 and 4130 grade steels are wideky used in aerospace, oil and gas, automotive, agricultural and defense industries.

Round bars from AISI 4130/4140 structural steel alloys are offered as part of AVIATIONEU NEW ERA product lines for a wide range of uses in different applications (gears, connection rods, stem assemblies, pump shafts, tool holders and others. Sourced from quality producers, they are competitively priced and offered in different diameters ( 5.5-500 mm), pre-cut (5.8m, 6m, 11.8m) and cut to order lengths, consisting a cost effective solution when large quantities of such sheets are demanded. Unit of sale is 1 kilogrram (kg)) with Minimum Order Quantity (MOQ) 300 kilograms. Sea/sea-surface transport to customer destinationcan be provided. Approximate time for shipping: usually 1-2 months from the time of order payment depending on the ordered quantity. Appearing price is indicative per unit of sale. For additional information, please refer to the attached comparison table of specifications for different steel alloys or contact us for quotation.

(*) American Iron & Steel Institute (AISI), Society of Automotive Engineers (SAE)

Steel alloy 4130 (ST4130), also known as Chrome Moly after the 2 key elements of its composition, chromium, and molybdenum, is a general-purpose alloy steel widely used by the aviation and motorsports industries due to its weldability, fabrication, and mild hardenability in all offered forms (tubes, bars, sheets and plates). They are available in two different material states (Normalized and Annealed) depending on the process of how the material is heated and cooled.

The Normalized condition (sometimes referred to as "Condition N") is the harder and stronger condition and is best used when forming is not needed. Normalizing relieves internal stress on steel and improves toughness in steels that may harden after the cold working process. The Annealed condition (sometimes referred to as "Condition A") is the softer and formable condition and is best used when forming is needed. Annealing relieves internal stresses, softens and makes the material more ductile.

4130 alloy steel (Chrome Moly) seamless round tubes are offered in Normalized (N )  or Annealed (A) conditions as part of our own branded (AVIATIONEU NEW ERA) product lines. They have been for years the standard of the aircraft industry. These tubes offer good strength and weldability without compromising steel abrasion or impact resistance and can also be made even stronger through heat treatment. They are commonly used in in structural applications, gears, fasteners, and aircraft exteriors. Tensile Strength: 90,000 PSI. Available in a range of outer diameters, wall thicknesses in millimeters (mm) and pre-cut lengths of one meter or multiples or cut to order (CTO) lengths in centimeters (cm). Depending on the supplier, they comply with different standards/specifications, such as ASTM A 519 or AMS MIL-T6737. Unless otherwise mentioned, there is additional cost if manufacturing test reports are required. For additional information, please refer to the supplied documentation or contact us.

Steel alloy 4130 (ST4130),aka Chrome Moly,after the 2 key composition elements,chromium & molybdenum,is a general-purpose alloy steel widely used by the aviation and motorsports industries due to its weldability, fabrication and mild hardenability in all offered forms (tubes, bars/rods, sheets and plates). Available in two material states (Normalized and Annealed) depending on the process of how the material is heated and cooled.The Normalized condition (aka "Condition N") is the harder and stronger condition, best used when forming is not needed while the Annealed condition (aka "Condition A") is the softer and formable condition.

4130 steel bars/rods in round, rectangullar (flat), square and hexagonal shapes (cross sections) are offered as part of our own branded (AVIATIONEU NEW ERA) product lines. Sourced from quality producers, most of these bars/rods are produced, unless otherwise specified, as “Cold Finished Normalized” (aka “Condition D4”), indicated by the letters "NRZ" and  "CF" in the product SKUs. They come in different dimesions in inches and cut to order (CTO) lengths in feet (*) and meet several AMS specifications, most common being AMS-S-6758 and AMS- 6348. They are widely used in a variety of applications due to their excellent strength to weight ratio,weldability by all conventional methods and resistance to scaling and oxidation. 

Unless otherwise mentioned, there is additional cost if manufacturing test reports are required. For additional information, please refer to the supplied documentation, the individual product presentations or contact us.

(*) As per vendors' requirements, certain 4130 steel bars/rods are ONLY SOLD in 3 feet increments, i.e. cut lengths can only be set to 3, 6, 9 feet etc. as mentioned in the respectivel product presentations. In this case, appearing prices are per 3 feet length and the Minimum Order Quantity (MOQ) is 3 pieces for each of selected rod/bar. Required cut lengths should be specified at the time of ordering.

Steel alloy 4130 (ST4130),aka Chrome Moly,after the 2 key composition elements,chromium & molybdenum,is a general-purpose alloy steel widely used by the aviation and motorsports industries due to its weldability, fabrication and mild hardenability in all offered forms (tubes, bars/rods, sheets and plates). Available in two material states (Normalized and Annealed) depending on the process of how the material is heated and cooled.The Normalized condition (aka "Condition N") is the harder and stronger condition, best used when forming is not needed while the Annealed condition (aka "Condition A") is the softer and formable condition.

4130 steel bars/rods in round, rectangullar (flat), square and hexagonal shapes (cross sections) are offered as part of our own branded (AVIATIONEU NEW ERA) product lines. Sourced from quality producers, most of these bars/rods are produced, unless otherwise specified, as “Cold Finished Normalized” (aka “Condition D4”), indicated by the letters "NRZ" and  "CF" in the product SKUs. They come in different dimesions in inches and cut to order (CTO) lengths in feet (*) and meet several AMS specifications, most common being AMS-S-6758 and AMS- 6348. They are widely used in a variety of applications due to their excellent strength to weight ratio,weldability by all conventional methods and resistance to scaling and oxidation. 

Unless otherwise mentioned, there is additional cost if manufacturing test reports are required. For additional information, please refer to the supplied documentation, the individual product presentations or contact us.

(*) As per vendors' requirements, certain 4130 steel bars/rods are ONLY SOLD in 3 feet increments, i.e. cut lengths can only be set to 3, 6, 9 feet etc. as mentioned in the respectivel product presentations. In this case, appearing prices are per 3 feet length and the Minimum Order Quantity (MOQ) is 3 pieces for each of selected rod/bar. Required cut lengths should be specified at the time of ordering.

Steel alloy 4130 (ST4130),aka Chrome Moly,after the 2 key composition elements,chromium & molybdenum,is a general-purpose alloy steel widely used by the aviation and motorsports industries due to its weldability, fabrication and mild hardenability in all offered forms (tubes, bars/rods, sheets and plates). Available in two material states (Normalized and Annealed) depending on the process of how the material is heated and cooled.The Normalized condition (aka "Condition N") is the harder and stronger condition, best used when forming is not needed while the Annealed condition (aka "Condition A") is the softer and formable condition.

4130 steel bars/rods in round, rectangullar (flat), square and hexagonal shapes (cross sections) are offered as part of our own branded (AVIATIONEU NEW ERA) product lines. Sourced from quality producers, most of these bars/rods are produced, unless otherwise specified, as “Cold Finished Normalized” (aka “Condition D4”), indicated by the letters "NRZ" and  "CF" in the product SKUs. They come in different dimesions in inches and cut to order (CTO) lengths in feet (*) and meet several AMS specifications, most common being AMS-S-6758 and AMS- 6348. They are widely used in a variety of applications due to their excellent strength to weight ratio,weldability by all conventional methods and resistance to scaling and oxidation. 

Unless otherwise mentioned, there is additional cost if manufacturing test reports are required. For additional information, please refer to the supplied documentation, the individual product presentations or contact us.

(*) As per vendors' requirements, certain 4130 steel bars/rods are ONLY SOLD in 3 feet increments, i.e. cut lengths can only be set to 3, 6, 9 feet etc. as mentioned in the respectivel product presentations. In this case, appearing prices are per 3 feet length and the Minimum Order Quantity (MOQ) is 3 pieces for each of selected rod/bar. Required cut lengths should be specified at the time of ordering.

Steel alloy 4130 (ST4130), also known as Chrome Moly is a general-purpose alloy steel widely used by the aviation and motorsports industries due to its tensile strength, weldability, fabrication, and  hardenability. Sourced from quality producers AVIATIONEU NEW ERA 4130 Alloy Steel welded round tubes are cold drawn, offered in Normalized (N) condition and can be used in mechanical engineering, automotive applications and machinery. They conform to ASTM A513 specifications and they are offered in different wall thicknesses (1-12.5 mm), outer diameters (OD  6-350 mm) and cut to order lengths (max12000 mm/12 m), in various heat treatment processes (no final thermal treatment, stress relieved, annealed or normalized). Unit of sale is 1 Ton (US or Metric as specified) with Minimum Order Quantity (MOQ) 3 Tons. Sea/sea-surface transport to customer destination can be provided. Approximate time for shipping: usually 1-2 months from the time of order payment depending on the ordered quantity. Appearing price is indicative per unit of sale. Mechanical properties, depending on the selected heat treatment process, are summarized below. For additional information please refer to the attached chart or contact us.

Yield Strength: 55 ksi/ 379 Mpa - 50 ksi/ 345 Mpa - 85 ksi/ 586 Mpa - 80 ksi/ 552 Mpa

Ultimate Strength: 72 ksi/ 496 Mpa - 70 ksi/ 483 Mpa - 95 ksi/ 655 Mpa - 90 ksi/ 621 Mpa

Enlongation (%): 10% - 20% - 5% - 10%

Rockwell Hardness B Scale: 80 - 100 - 90- 87