S 99
UK B.S. BS 5S 99 : 1994, S 99 Specialsteel Technical requirements for 2.5 % Ni-Cr-Mo (high carbon) steel black bar and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application |
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | S 99 | Martensite | B.S. | UK | Technical requirements for 2.5 % Ni-Cr-Mo (high carbon) steel black bar |
Chemical composition(mass fraction)(wt.%) of the S 99
| C | Si | Mn | P | S | Cr | Mo | Ni | Al | Fe |
|---|---|---|---|---|---|---|---|---|---|
| 0.36 -0.44 | 0.10 -0.35 | 0.45 -0.70 | ≤0.025 | ≤0.015 | 0.5 -0.8 | 0.45 -0.65 | 2.3 -2.8 | 0.015 -0.050 | ≤Base |
Mechanical Properties of steel grade S 99
| 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) |
|---|---|---|---|---|---|---|
| 181 (≥) | 435 (≥) | 44 | 42 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 434 |
Physical Properties of steel grade S 99
| 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 |
|---|---|---|---|---|---|---|---|
| 22 | – | – | 0.12 | – | |||
| 679 | 747 | – | 24.3 | 212 | – | ||
| 381 | – | 21 | 33.2 | 314 | 444 |
Heat Treatment of steel grade S 99
Heat treated : 1424°C – 1693°C
Technological Curves of steel grade S 99
No Curve
Cross Reference Table (Equivalent Grade) of S 99
| Grade | Standard | Country | Application |
|---|---|---|---|
| ASTM 5140 | |||
| AISI 201 | |||
| AISI 202 | |||
| 1.2767 | |||
| 17-4PH | |||
| AISI 1052 | |||
| AISI 416Se | |||
| AISI 1330 | |||
| AISI 205 Stainless Steel | |||
| AISI A10 | |||
| AISI A2 | |||
| AISI A3 | |||
| AISI A4 | |||
| 1.0036 | |||
| 1.0037 | |||
| SAE J403 | |||
| UNS G10100 | |||
| AMS 4924 | |||
| ASTM A36 | |||
| Electrode 100S-1 |