8620h Steel

The 8620H is a round steel that under the ASTM A304 standard.

8620H Chemical Composition

Mn: 0.70~0.90
S: Allowable residual content≤0.035
P: Allowable residual content≤0.035
Cr: 0.40~0.60
Ni: 0.40~0.70
Cu: Allowable residual content≤0.30
Mo: 0.15~0.25

8620H Mechanical Property

Tensile strength σb (MPa): ≥ 980 (100)
Yield strength σs (MPa): ≥ 785 (80)
Elongation δ5 (%): ≥9
Area shrinkage ψ (%): ≥ 40
Impact work Akv (J): ≥ 47
Impact toughness value αkv (J/cm2): ≥59(6)
Hardness: ≤ 197HB
Sample size: sample blank size is 15mm

Heat treatment of 8620H

Quenching at 850 ° C, oil cooling; tempering at 200 ° C, air cooling.

8620H Steel Delivery status

Delivered in (normalized, annealed or high temperature tempered) or not heat treated, the delivery status shall be indicated in the contract.