GB/T 3077 40CrNiMoA Steel — Specifications & Listings

GB/T 3077

40CrNiMoA is a high-strength alloy steel with excellent toughness, hardenability, and fatigue resistance. The grade is commonly used in aerospace and heavy engineering applications.

Category: Alloy Steel

Grade Details

Grade	GB/T 3077 40CrNiMoA
Standard	GB/T 3077
Description	40CrNiMoA is a high-strength alloy steel with excellent toughness, hardenability, and fatigue resistance. The grade is commonly used in aerospace and heavy engineering applications.
Applications	Used for crankshafts, turbine shafts, heavy-duty gears, aircraft landing parts, bolts, and pressure components.

Chemical Composition (%)

C	Si	Mn	Cr	Ni	Mo	P	S
0.37-0.44	0.17-0.37	0.50-0.80	0.60-0.90	1.25-1.65	0.15-0.25	0.025 max	0.025 max

Mechanical Properties

tensile_strength	1080-1280 MPa
yield_strength	930-1080 MPa
elongation	10-14%
hardness	30-38 HRC

Active GB/T 3077 40CrNiMoA Listings on M-EX

No active GB/T 3077 40CrNiMoA listings at this time.