SAE4 140(AISI4 140) alloy steel
American standard SAE/AISI
Brand: 4 140
Standard: ASTM A29/A 29M-05
Features and applications:
4 140 special steel, American special steel
Juneng 4 140 Round Steel 135-2435- 1833
Chemical composition:
c:0.38-0.43；
Manganese Mn: 0.75- 1.00
Phosphorus P: ≤ 0.035
Sulfur content: ≤ 0.040
Silicon Si:0. 15-0.35
Chromium Cr: 0.80- 1. 10
Momo: 0. 15-0.25
Dongte AISI 4 140 round bar 135-2435- 1833
Mechanical properties of 4 140;
Tensile strength? σb(MPa):≥ 1080( 1 10)
Yield strength? σs (MPa):≥930(95)
Elongation? δ5 (%):≥ 12
Area shrinkage ψ (%): ≥ 45
Impact work akv (j): ≥ 63
Impact toughness value α kV (j/cm2): ≥ 78 (8)
Hardness: ≤2 17HB
Sample size: the blank size of the sample is 25mm.