36CrNiMo4
Implementation of the standards: EN 10083/1-1991 36CrNiMo4 (1.6511) alloy structural steel for gears, shafts, piston type and automotive spare parts, aircraft spare parts and other kinds of special wear-resistant.36CrNiMo4 chemical composition: Carbon C: 0.32 ~ 0.40 Si Si: ≤ 0.40 Mn Mn: 0.50 ~ 0.80 Sulfur S: to allow the residual phosphorus content ≤ 0.035 P: ≤ 0.035 to allow the residual content of chromium Cr: 0.90 ~ 1.20 Ni Ni: 0.90 ~ 1.20 copper Cu: allow the residual content ≤ 0.025 Mo Mo: 0.15 ~ 0.30
China GB steel: 40CrNiMoA, Russia ГOCT 40XHMA, German DIN steel 36CrNiMo4, German DIN materials number 1.6511, the French NF standards 40NCD3, Japan JIS standard SNCM439, the British standard BS 816M40, U.S. AISI / ASTM 4340, UNS U.S. standard G43400
36CrNiMo4 mechanical properties:
Tensile strength σb (MPa): ≥ 980 (100)
Yield strength σs (MPa): ≥ 835 (85)
Elongation δ5 (%): ≥ 12
Reduction of area ψ (%): ≥ 55
Impact energy Akv (J): ≥ 78
Impact toughness αkv (J/cm2): ≥ 98 (10)
Hardness: ≤ 269HB
Sample size: Sample size is 25mm rough
36CrNiMo4 heat treatment and microstructure specifications:
Standard heat treatment: quenching 850 ℃, oil cooling; tempering 600 ℃, water-cooled, oil-cooling.
36CrNiMo4 Delivery status: to heat treatment (normalizing, annealing, or tempering) or heat treatment delivery, delivery status should be indicated in the contract.
