Specification for high thermal expansion steel billets, bars, forgings and parts (620 MPa: limiting ruling section 150 mm)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.55 | 0.70 | ||
| Si | 0.20 | 0.50 | ||
| Mn | 3.50 | 5.50 | ||
| P | - | 0.035 | ||
| S | - | 0.025 | ||
| Cr | 3.00 | 4.00 | ||
| Ni | 11.00 | 14.00 | ||
| Mo | - | 0.50 | ||
| W | - | 1.00 | ||
| V | - | 0.25 |
Specification for high thermal expansion steel billets, bars, forgings and parts (620 MPa: limiting ruling section 150 mm)
| Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 947 (≥) | 829 (≥) | 44 | 24 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 311 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 932 (≥) | 553 (≥) | 13 | 23 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 343 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 221 | 551 | 589 |
We can customize the production of 2S.131 grade, contact us for the best solution.
–sales@specificsteel.com