What is AISI 5140 steel ?

ASTM grade 5140 is one structural alloy steel grade in ASTM A29 standard for general application. 5140 steel plate is widely used in low and moderately stressed parts for vehicles, engines and machines where hard, wear resisting surface is needed. Gnee is professional 5140 plate & round bar supplier and we keep wide size range for 5140 plate in stock for immediate shipment. Contact us for any AISI 5140 plate material request and best 5140 grade steel price.

Competitive Advantage for AISI 5140 material steel bar:

• Available in stock for immediate shipment
• High strength,
• High tenacity
• Good hardenability
• High resistance to thermal properties.
• Competitive price

Round Bar: diameter 20mm – 300mm

Steel Plate and Steel Block: thickness 10-200mm x width 300-2000mm

• 10-80mm thickness 5140 plate are available all the time in stock,
• 90-200mm thickness plate to be newly production in 15-30 days lead time.

Surface Finish: Black Surface, Milled Surface or Polished Surface as per given requirements.

3. ASTM 5140 Material Chemical Composition and Equivalent

Hot forming temperature: 1050-850℃.

• Soft Annealing

Heat to 680-720℃, cool slowly. This will produce a maximum 5140 hardness of 241HB (Brinell hardness).

• Noramlizing of steel grade 5140

Temperature: 840-880℃.

• Hardening of 5140 forged steel

Harden from a temperature of 820-850, 830-860℃ followed by water or oil quenching.

• Tempering of SAE 5140 material

Tempering temperature: 540-680℃.

AISI 5140 steel can be used for low and moderately stressed parts for vehicles, engines and machines where hard, wear resisting surface is needed. Hardness as surface hardened about 54 HRC. SAE 5140 steels can also be for marine engineering industry, chemical processing plants, boiler & pressure vessels, nuclear power plants etc.

If you have queries about the 5140 specs, or any questions about the 5140 vs 4130, 5140 vs 4340 etc, please contact us for technical support any time.