ATI Allvac® Vasco® 17-4 Precipitation Hardening Steel, Heat Treatment: 1038°C (1900°F) + Age

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ATI Allvac® Vasco® 17-4 Precipitation Hardening Steel, Heat Treatment: 1038°C (1900°F) + Age
Categories:	Metal; Ferrous Metal; Stainless Steel; Precipitation Hardening Stainless
Material Notes:	Data provided by Allvac. Applications: Aircraft and missile fittings, fasteners, gears. Turbine and pump blades, shafts.
Key Words:	Allvac, an Allegheny Teledyne Company, 17-4PH, 17/4PH, 17-4 PH, AMS 5604, ASTM 240-QQS 766, DIN 1.4542, UNS S17400; PWA 1091. PDS 10705 GD-GF
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Physical Properties	Metric	English	Comments

Density	7.78 g/cc	0.281 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	351	351	Estimated from Rockwell C value for Brinell test with 3000 kg load/10 mm diameter ball
Hardness, Knoop	382	382	Estimated from Rockwell C value.
Hardness, Rockwell C	38	38
Hardness, Vickers	367	367	Estimated from Rockwell C value.
Tensile Strength, Ultimate	1172 MPa	170000 psi
Tensile Strength, Yield	1069 MPa @Strain 0.2 %	155000 psi @Strain 0.2 %
Elongation at Break	>= 10 %	>= 10 %
Reduction of Area	>= 40 %	>= 40 %

Component Elements Properties	Metric	English	Comments
Carbon, C	0.035 %	0.035 %
Chromium, Cr	16.3 %	16.3 %
Copper, Cu	4.0 %	4.0 %
Iron, Fe	74 %	74 %	as balance
Manganese, Mn	0.50 %	0.50 %
Nickel, Ni	4.0 %	4.0 %
Niobium, Nb (Columbium, Cb)	0.30 %	0.30 %
Phosphorus, P	0.020 %	0.020 %
Silicon, Si	0.50 %	0.50 %
Sulfur, S	0.015 %	0.015 %

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NALL81 / 14813

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