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to Properties of steels and cast irons
(submitted by the website administration)
| 17-4PH | ||||
| Chemical composition: C=0.7%max, Mn=1%max, Cr=17%, Ni=4%, Cu=4%, Cb+Ta=0.3% | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 7.75 *10³ | kg/m³ | 484 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 196 | GPa | 28400 | ksi |
| Thermal expansion (20 ºC) | 10.8*10-6 | ºCˉ¹ | 6.0*10-6 | in/(in* ºF) |
| Specific heat capacity | 460 | J/(kg*K) | 0.11 | BTU/(lb*ºF) |
| Thermal conductivity | 18.4 | W/(m*K) | 128 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity | 8*10-7 | Ohm*m | 8*10-5 | Ohm*cm |
| Tensile strength (annealed) | 1030 | MPa | 150000 | psi |
| Yield strength (annealed) | 760 | MPa | 110000 | psi |
| Elongation (annealed) | 10 | % | 10 | % |
| Hardness (annealed) | 33 | RC | 33 | RC |
| Tensile strength (cold drawn) | 1380 | MPa | 200000 | psi |
| Yield strength (cold drawn) | 1230 | MPa | 178000 | psi |
| Elongation (cold drawn) | 12 | % | 12 | % |
| Hardness (cold drawn) | 44 | RC | 44 | RC |