17-4 plates also known as UNS S17400, 17-4 PH and Grade 630, is one of the original precipitation hardened grades developed in the 50’s. Primarily 17-4 plates comprised of 17% chromium, 4% nickel, 4% copper, with the balance being iron. 17-4 plates are also trace amounts of manganese, phosphorus, sulfur, silicon, columbium (or niobium) and tantalum.
Temperature Range | W/mK | Btu/(hr/ft/in/F) | |
C | F | ||
149 | 300 | 17.9 | 124 |
260 | 500 | 19.5 | 135 |
460 | 860 | 22.5 | 156 |
482 | 900 | 22.6 | 157 |
17-4ph h900 clad plate uses temperature at 900 Fahrenheit for 4 hours to harden the element. However, thermal cutting operations should be avoided for this, instead, mechanical cutting operations are to be used.
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