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4130 steel

4130 steel

AISI 4130 steel is a type of alloy steel that contains chromium and molybdenum. It is known for its high strength, toughness, and excellent weldability. This steel is commonly used in applications such as aircraft parts, structural tubing, and racing car components. It offers good resistance to fatigue and impact, making it suitable for demanding environments.

4130 Steel Bar Chemical Composition

 Cr

Mn

 C

 Si

Mo

 Si

P

0.80 – 1.10

0.40 – 0.60

0.280 – 0.330

0.15 – 0.30

0.15 – 0.25

0.04

0.035

Physical Properties

Properties

Metric

Imperial

Density

7.85 g/cm3

0.284 lb/in³

Melting point

1432°C

2610°F

Mechanical Properties

Properties

Metric

Imperial

Tensile strength, ultimate

560 MPa

81200 psi

Tensile strength, yield

460 MPa

66700 psi

Modulus of elasticity

190-210 GPa

27557-30458 ksi

Bulk modulus (Typical for steel)

140 GPa

20300 ksi

Shear modulus (Typical for steel)

80 GPa

11600 ksi

Poissons ratio

0.27-0.30

0.27-0.30

Elongation at break (in 50 mm)

21.50%

21.50%

Reduction of area

59.6

59.60%

Hardness, Brinell

217

217

Hardness, Knoop (Converted from Brinell hardness)

240

240

Hardness, Rockwell B (Converted from Brinell hardness)

95

95

Hardness, Rockwell C (Converted from Brinell hardness, value below normal HRC range, for comparison purposes only.)

17

17

Hardness, Vickers (Converted from Brinell hardness)

228

228

Machinability (Annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.)

70

70

Other Designations

Other designations that are equivalent to AISI 4130 alloy steel include the following;

AMS 6348

AMS 6371

ASTM A331

ASTM A829

DIN 1.7218

AMS 6350

AMS 6373

ASTM A506

MIL S-18729

UNI 25 CrMo 4

AMS 6351

AMS 6374

ASTM A507

MIL S-6758

JIS SCCrM 1

AMS 6360

AMS 6528

ASTM A513

SAE J1397

JIS SCM 2

AMS 6361

AMS 7496

ASTM A519

SAE J404

SS 2225

AMS 6362

ASTM A29

ASTM A646

SAE J412

B.S. CDS 110

AMS 6370

ASTM A322

ASTM A752

AFNOR 25 CD 4 (S)

SAE J770

Application

Type 4130 steel is an exceptionally tough metal vital to manufacturing, welding, cutting, and other high-stress applications in industry. Its great heat treatment characteristics impart a high toughness and, combined with its great workability and machinability, allows 4130 steel to be widely useful. Though most often implemented as structural steel, there are some other notable applications, such as:

  • Manufacturing equipment for bearings, vehicle parts, and gears
  • Rock crushing machinery
  • Resistance welding products
  • Drill bitsand taps
  • Mills and cutters
Fabrication and Heat Treatment

Machinability – AISI 4130 steel can be easily machined using conventional methods. However, machining becomes difficult when the hardness of the steel is increased.

Forming of AISI 4130 steel can be performed in the annealed condition.

  • Welding of AISI 4130 steel can be performed by all commercial methods.
  • Heat Treatment – AISI 4130 steel is heated at 871°C (1600°F) and then quenched in oil. This steel is usually heat-treated at temperatures ranging from 899 to 927°C (1650 to 1700°F).
  • Forging of AISI 4130 steel can be performed at 954 to 1204°C (1750 to 2200°F).
  • Hot working of AISI 4130 steel can be done at 816 to 1093°C (1500 to 2000°F).
  • AISI 4130 steel can be cold worked using conventional methods.
  • AISI 4130 steel can be annealed at 843°C (1550°F) followed by air cooling at 482°C (900°F).
  • Tempering of AISI 4130 steel can be performed at 399 to 566°C (750 to 1050°F), depending on the desired strength level.
  • Hardening of AISI 4130 steel can be done with cold working or heat treatment.

Wholesale Price

800-1000USD

Contact us for 10% discount

  • Tell: +86-0537-3777399
  • E-Mail: [email protected]
  • Address;Yanzhou,Economic zone,Jining,China
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Qilu has a large stock of rolled and forged bars from Dongbei Special Steel ,Shi-Steel ,Huai-Steel with a short delivery time .We also stock other products which can cover carbon steel ,alloy steel ,tool and mould steel,stainless steel in different shapes and sizes.Our stock of steel exceeds 12,000 tons all year round.

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In the steel workshop, metals are heated and subjected to high pressure to forge them into various shapes and sizes of parts, components, and equipment. These products can be used in various industries, such as aviation, automotive, construction, and more.

Shandong Qilu lndustrial Co.,Ltd.established from the year of 1985,we are engaged in supplying forged steel products.Having a full line service from smelting,forging,heat treatment,surface process to logisitics.We’ve served of customers in abroad and domestic market,familiar with the standards in different countries.Since 2016,we’ve to broaden our range of products,invested a forged products factory and set up two main warehouses aiming to provide a better service relating steel products.

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Steel is the most versatile metal that finds extensive use not only in industrial applications but also across a spectrum of our day to day life. The demand for steel is all time high in the international market. 

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Welcome to Qilu, with sales company in Shandong ,and special steel company in Jiangsu province with two warehouses in the Wuxi and Shanghai, we provide steel products solutions in domestic and abroad.

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