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GB/T 3077-2015 40CrNiMoA Steel: Specifications & Listings

GB/T 3077-2015 40CrNiMoA: 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.

Forms: Round Bar Category: Alloy Steel
Grade Details
GradeGB/T 3077-2015 40CrNiMoA
Standard GB/T 3077-2015
ApplicationsUsed for crankshafts, turbine shafts, heavy-duty gears, aircraft landing parts, bolts, and pressure components.
Most Active InWest (Gujarat, Maharashtra)
Supply & Demand by FormSee Full Supply & Demand →
Round Bar →
Low Activity
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
SAE J404 E4340 SAE J404:2009 Close Alternative
SAE J404 E4340 SAE J404:2000 Close Alternative
SAE J404 4340 SAE J404:2009 Close Alternative
SAE J404 4340 SAE J404:2000 Close Alternative
BS 970 (Part 3) 817M40 BS 970 (Part 3):1991 Close Alternative
SAE J404 8637 SAE J404:2009 Close Alternative
SAE J404 8640 SAE J404:2009 Close Alternative
SAE J404 8637 SAE J404:2000 Close Alternative
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
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

Popular forms for this grade:

Round Bar (2)

Active GB/T 3077-2015 40CrNiMoA Listings on M-EX (For Sale)

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GB/T 3077-2015 40CrNiMoA Round Bar
7.300 MT
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GB/T 3077-2015 40CrNiMoA Round Bar
3.000 MT
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