Alloy steel SAE 8620 / SAE 8620H Mechanical properties
1.SAE 8620 Chemical composition
Component | Wt. % | Component | Wt. % | Component | Wt. % |
C | 0.18 - 0.23 | Mn | 0.7 - 0.9 | P | Max 0.035 |
Cr | 0.4 - 0.6 | Mo | 0.15 - 0.25 | S | Max 0.04 |
Fe | 96.9 - 98.02 | Ni | 0.4 - 0.7 | Si | 0.15 - 0.35 |
2.Mechenical properties:of SAE 8620H
Properties | Metric | Imperial |
Tensile strength | 530 MPa | 76900 psi |
Yield strength | 385 MPa | 55800 psi |
Elastic modulus | 190-210 GPa | 27557-30458 ksi |
Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
Elongation at break (in 50 mm) | 31 | 31 |
Reduction of area | 31 | 31 |
Izod Impact | 115 J | 84.8 ft.lb |
Hardness, Brinell | 149 | 149 |
Hardness, Knoop (converted from Brinell hardness) | 169 | 169 |
Hardness, Rockwell B (converted from Brinell hardness) | 80 | 80 |
Hardness, Vickers (converted from Brinell hardness) | 155 | 155 |
Machinability (annealed and cold drawn, based on 100 machinability for AISI 1212 steel) | 65 | 65 |
3.Sizes for SAE 8620H alloy steel bars:
Diameter 16mm to 150mm
4.Delivery condition : Hot rolled, cold drawn, Heat treated (annealed, Q&T,Normalized ...)
5.MOQ:3tons / one bundle
6.Delivery time: 7-30 days upon to the sizes and quantity.
7.Quality control:
1.Processing Line:
Iron - hot metal pretreatment - Converter - Refining --VD / RH- - Continuous Casting - Hot Rolling (KOCKS) - heat --UT Check - Processing and Distribution Center
Electric Furnace - Refining --VD / RH- - Continuous Casting - Hot Rolling (KOCKS) - heat --UT Check - Processing and Distribution Center
2.Gas content level:O2 - <20 ppm H2 - <2 ppm N2- <100 ppm
3.Grain Sizes:5-8
4. non-metallic inclusions contorlling level
A | B | C | D | |
MAX | MAX | MAX | MAX | |
Thin | 2 | 2 | 2 | 2 |
Thick | 1 | 1 | 1 | 1 |











Alloy steel SAE 8620 / SAE 8620H Mechanical properties
Alloy steel SAE 8620 / SAE 8620H Mechanical properties
Alloy steel SAE 8620 / SAE 8620H Mechanical properties