ASTM 8Q
USA AISI ASTM 8Q and ASTM 8Q Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application |
|---|---|---|---|---|---|
| Steel Grades | Special Alloy | ASTM 8Q | AISI | USA | |
| ICI 1040 | |||||
| ICI 1050 | |||||
| ASTM 4A,4Q | |||||
| ICI 6120 | |||||
| ASTM 5N | |||||
| ASTM 6N | |||||
| ICI 4020 | |||||
| ASTM 7Q | |||||
| ICI 4130 | |||||
| ICI 4140 |
Chemical composition(mass fraction)(wt.%) of the ASTM 8Q
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | Mo(％) | W(%) | Cu(%) |
|---|---|---|---|---|---|---|---|---|---|
| 0.35-0.45 | 0.20-0.80 | 0.70-1.00 | Max 0.04 | Max 0.045 | 0.80-1.10 | Max 0.50 | 0.15-0.25 | Max 0.10 | Max 0.50 |
Mechanical Properties of steel grade ASTM 8Q
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 578 (≥) | 713 (≥) | 34 | 44 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 311 |
Physical Properties of steel grade ASTM 8Q
| Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson’s coefficient, ν |
|---|---|---|---|---|---|---|---|
| 24 | – | – | 0.44 | – | |||
| 742 | 642 | – | 22.3 | 413 | – | ||
| 671 | – | 21 | 14.2 | 114 | 341 |
Heat Treatment of steel grade ASTM 8Q
Heat treated : 1528°C – 1532°C
Technological Curves of steel grade ASTM 8Q
No Curve
Cross Reference Table (Equivalent Grade) of ASTM 8Q
| Grade | Standard | Country | Application |
|---|---|---|---|
| ASTM 1030 | ASTM | USA | General use carbon steel bar |
| ASTM 1005 | ASTM | USA | General use carbon steel bar |
| ASTM 1006 | ASTM | USA | General use carbon steel bar |
| ASTM 1008 | ASTM | USA | General use carbon steel bar |
| ASTM 1010 | ASTM | USA | General use carbon steel bar |
| ASTM 1013 | ASTM | USA | General use carbon steel bar |
| ASTM 1015 | ASTM | USA | General use carbon steel bar |
| ASTM 1016 | ASTM | USA | General use carbon steel bar |
| ASTM 1017 | ASTM | USA | General use carbon steel bar |
| ASTM 1018 | ASTM | USA | General use carbon steel bar |
| ASTM 1019 | ASTM | USA | General use carbon steel bar |
| ASTM 1020 | ASTM | USA | General use carbon steel bar |
| ASTM 1021 | ASTM | USA | General use carbon steel bar |
| ASTM W1-A | ASTM | USA | Carbon tool steel |
| ASTM A182 F55 | ASTM | USA | Super Duplex |
| ASTM 431 | ASTM | USA | Martensitic special steel |
| ASTM 440A | ASTM | USA | Martensitic special steel |
| ASTM 440B | ASTM | USA | Martensitic special steel |
| ASTM 440C | ASTM | USA | Martensitic special steel |
| ASTM 501 | ASTM | USA | Martensitic special steel |