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AISI 4140/ JIS SCM440/ DIN 42CrMo4 COLD DRAWN STEEL FLAT BAR

C60 FORGED CARBON STEEL BAR for automobile rear

AISI 4140/ JIS SCM440/ DIN 42CrMo4 COLD DRAWN STEEL FLAT BAR is a medium carbon, chromium-molybdenum, through-hardening alloy steel that has a good hardenability with high strength and toughness as well as good fatigue and impact resistance after heat treating.

Similar Grades

Standard Grade Chemical composition (%)
C Si Mn Cr Mo P S

 

GB 42CrMo 0.38-0.45 0.17-0.37 0.50-0.80 0.90-1.20 0.15-0.25 ≤0.035 ≤0.035
AISI 4140 0.38-0.43 0.15-0.35 0.75-1.00 0.80-1.10 0.15-0.25 ≤0.035 ≤0.040
JIS SCM440 0.38-0.43 0.15-0.35 0.60-0.90 0.90-1.20 0.15-0.30 ≤0.030 ≤0.030
DIN 42CrMo4/ 1.7225 0.38-0.45 ≤0.40 0.60-0.90 0.90-1.20 0.15-0.30 ≤0.025 ≤0.035

AISI 4140/ JIS SCM440/ DIN 42CrMo4 COLD DRAWN STEEL FLAT BAR

Available Size

Cold drawn flat bar: thickness5mm-80mm, width10mm-220mm

Available Heat Treatment

Annealing/Normalizing/Hardening/Tempering/Quenching

Hot working temperature ℃: 1050-850

Annealing temperature ℃: 680-720

Normalizing temperature ℃: 840-880

Quenching temperature ℃: 820-850 water, 830-860 oil

Tempering temperature ℃: 540-680

Characteristics

good overall combinations of strength, toughness, wear resistance and fatigue strength.

AISI 4140/ JIS SCM440/ DIN 42CrMo4 COLD DRAWN STEEL FLAT BAR

Application

Typical applications for 4140 HR bar are sprockets, bolts, chain pins, drill collars, universal joints, highly stressed parts or parts subject to severe wear.

Delivery Condition

Cold drawn

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