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| Engineering Data | |||||
| Do you need a question answered NOW? Click here | Typical Physical and Mechanical Properties | ||||
| T302 | |||||
| T303 | T321 | T410 | 17 - 4 PH | ||
| Description | T304 | T316 | T347 | T416 | Condition H900 |
| Density - pounds/cubic inch | 0.29 | 0.29 | 0.29 | 0.28 | 0.28 |
| Specific Electrical Resistance at 68 F | |||||
| microhms/cm^3 | 72 | 74 | 72 | 57 | 77 |
| microhms / in^3 | 28.4 | 29.2 | 28.5 | 22.4 | 30.3 |
| Melting Range | 2550 - 2650 | 2500 - 2550 | 2550 - 2600 | 2700 -2790 | 2500 - 2550 |
| Structure Type | Austenitic | Austenitic | Austenitic | Martensitic | Martensitic |
| Specific Heat | |||||
| cal^3/degC/gm ( 0 - 100 C) | 0.12 | 0.12 | 0.12 | 0.11 | 0.11 |
| BTU/degF/lb. (32 - 212 F) | 0.12 | 0.12 | 0.12 | 0.11 | 0.11 |
| Thermal Conductivity | |||||
| cal/cm^2/sec/C/cm at 100C | 0.039 | 0.0373 | 0.0385 | 0.0595 | 0.0427 |
| BTU/sq.ft./hr./F/in. at 212F | 113 | 113 | 112 | 173 | 124 |
| Condition | |||||
| Mechanical Properties at Room Temperature | Annealed | Annealed | Annealed | Annealed | H900 |
| Tensile Strength 10^3 lb/sq.in. | 75 -95 | 80 -95 | 80 - 100 | 75 - 100 | 200 |
| Yield Strength 10^3 lb./sq/in. | 30 - 45 | 30 -45 | 35 - 50 | 35 - 45 | 185 |
| Modulus of Elasticity 10^6 psi | 28 | 28 | 28 | 29 | 29.5 |
| Elongation in 2 inches % | 60 - 50 | 60 - 40 | 50 - 40 | 35 - 20 | 14 |
| Izod Impact Strength ft-lbs | 110 - 80 | 110-80 | 110 - 80 | 100 - 60 | 20 |
| Brinnel Hardness Number | 135 - 185 | 135 - 185 | 135 -185 | max 241 | 420 |
| Rockwell Hardness Number | B75 - 90 | B75-90 | B75 -90 | max B100 | C44 |