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20Ni7Mo2
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IS 1570 - 4 Material Specification of Ni-Mo Alloy Steel 20Ni7Mo2 Round bar, Flat bar, Plate, Forgings 20Ni7Mo2 Heat treatment, Cold worked.

TECHNICAL SPECIFICATION DATASHEET - Grade 20Ni7Mo2
Material Category - 1.8Ni-0.25Mo Base Structural Alloy Steel
Material Specifications - IS 1570 - 4 (1988 / 2018 )
Special Melting Process - EAF + VD + LF / BEF + ESR
H S CODE For Customs: 7228 4000 / 7228 5000 / 7228 6000
Official Test Certificate - issued by TUV - SGS - BV

MAIN CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.17 ~ 0.22
Silicon, Si (％): 0.10 ~ 0.35
Manganese, Mn (％): 0.45 ~ 0.65
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.025
Chromium, Cr (％): -
Nickel, Ni (％): 1.65 ~ 2.00
Molybdenum, Mo (%): 0.20 ~ 0.30
Ferrum, Fe (%): Balance.

MECHANICAL PROPERTIES - HEAT TREATMENT CYCLE
Hot working tenperature /℃: 1100 ~ 850
Annealing temperature /℃: -
Quenching temperature /℃: 850 ~ 900
Cooling medium: oil or water
Common tempering temperature /℃: 600 ~ 660
Forms: Round bar, flat bar, plate
Tensile strength, σb/≥ MPa: 490 ~ 640
Yield strength, σ0.2/MPa: 345
Elongation, δ ≥(％): 22.0
Reduction of area, ф ≥ (％): -
Hardness via annealed /HBW: 197 max.

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