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NF A35-552:1986 40NCD3 Steel: Specifications & Listings

NF A35-552:1986 40NCD3: 40NCD3 is a nickel-chromium-molybdenum alloy steel developed for high strength and impact resistance in heat-treated condition. It provides good hardenability and fatigue performance in demanding service conditions.

Forms: Round Bar Category: Alloy Steel
Grade Details
GradeNF A35-552:1986 40NCD3
Standard NF A35-552:1986
ApplicationsUsed for gears, aircraft fittings, transmission shafts, crankshafts, heavy-duty bolts, and connecting rods.
Most Active InNorth (Punjab)
Supply & Demand by FormSee Full Supply & Demand →
Round Bar →
Low Activity
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
SAE J404 4340 SAE J404:2009 Close Alternative
SAE J404 4340 SAE J404:2000 Close Alternative
SAE J404 E4340 SAE J404:2009 Close Alternative
SAE J404 E4340 SAE J404:2000 Close Alternative
BS 970 (Part 3) 817M40 BS 970 (Part 3):1991 Close Alternative
NF A35-552 34NCD6 NF A35-552:1986 Close Alternative
IS 11169 (Part 1) 40Cr4Mo2 IS 11169 (Part 1):2022 Close Alternative
BS 970 (Part 3) 826M40 BS 970 (Part 3):1991 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 Ni Cr Mo P S
0.37-0.43 0.15-0.40 0.50-0.80 1.00-1.40 0.60-1.00 0.15-0.30 0.035 max 0.035 max
Mechanical Properties
Tensile Strength 850-1050 MPa
Yield Strength 650-850 MPa
Elongation 10-15%
Hardness 250-320 HB

Popular forms for this grade:

Round Bar (2)

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NF A35-552:1986 40NCD3 Round Bar
2.100 MT
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NF A35-552:1986 40NCD3 Round Bar
2.400 MT
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