AISI 4140 Alloy Steel | 1.7225 | SCM440 | 42CrMo4

Alloy Steel Plate 4140 is a flat shaped, plate of oil-hardening, chromium-molybdenum 4140 steel.

It has good strength and wear resistance, excellent toughness and ductility. 4140 Alloy steel has the ability to resist stress and creep at prolonged high temperatures (up to 1000°F).

4140 Alloy Steel is also available in leaded grades which greatly improves machinability. However leaded grades should not be used in applications where the temperature is elevated. This can cause lower ductility in these grades.

4140 alloy steel material is a high quality Quenched and Tempered Alloy Structural steel, It belong to the high quality medium carbon alloy steel, Oil Quenched & Tempered Hardenss is 28-34 HRC.4140 Annealing delivery hardenss less than 250HB.

MORE DETAILS ABOUT 4140 STEEL PLATE

• Specifications: AMS-S-6395
• Characteristics:Machinability: Moderate; Weldability: Moderate; Fatigue Resistance: Good
• Uses: Ships, Vehicles, Aircraft, Missiles, Weapons, Railways, Bridges, Pressure vessels, Machine tools
• More Info
  • Density: 0.284 lb/in3
  • Poissons Ratio: 0.29
  • Melting point: 2580°F
  • Hardness Brinell: 197
  • Elastic modulus: 27557-30458 ksi
  • Tensile strength : 95000 psi
  • Yield strength: 60200 psi

• AISI 4140 equivalent material
  • JAPAN : JIS SCM440 alloy steel
  • GERMANY : DIN WN-r 1.7255 / 42CrMo4 steel alloy
  • CHINA : GB 42CrMo steel
  • BRITISH : BS 708M40

AISI 4140 alloy steel Chemical composition

Mechanical Properties of 4140 alloy steel

Forming
AISI 4140 alloy steel has high ductility. It can be formed using conventional techniques in the annealed condition. It requires more pressure or force for forming because it is tougher than plain carbon steels.

Welding
AISI 4140 alloy steel can be welded using all conventional techniques. However, the mechanical properties of this steel will be affected if it is welded in the heat treated condition, and post weld heat treatment should be performed.

Forging
AISI 4140 alloy steel is forged at 926 to 1205°C (1700 to 2200°F)

Hot Working
AISI 4140 alloy steel can be hot worked at 816 to 1038°C (1500 to 1900°F)

Cold Working
AISI 4140 alloy steel can be cold worked using conventional methods in the annealed condition.

Processing

AISI 4140 steel can be cut to the size you need.

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