Vasco« 17-4 Precipitation Hardening Steel, Heat Treatment: 1038░C (1900░F) + Age


Subcategory: Ferrous Metal; Metal; Precipitation Hardening Stainless; Stainless Steel

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

Component   Wt. %
C0.035 
Cr16.3 
Cu4 
Fe74 
Component   Wt. %
Mn0.5 
Nb0.3 
Ni4 
Component   Wt. %
P0.02 
S0.015 
Si0.5 

Material Notes:
Iron content calculated as remainder. Data provided by Allvac.

Applications: Aircraft and missile fittings, fasteners, gears. Turbine and pump blades, shafts.

Physical PropertiesMetricEnglishComments
Density7.78 g/cc0.281 lb/in│ 

Mechanical Properties
Hardness, Brinell351351 Estimated from Rockwell C value for Brinell test with 3000 kg load/10 mm diameter ball
Hardness, Knoop382382 Estimated from Rockwell C value.
Hardness, Rockwell C3838 
Hardness, Vickers367367 Estimated from Rockwell C value.
Tensile Strength, Ultimate1172 MPa170000 psi 
Tensile Strength, Yield1069 MPa155000 psi 0.2% Offset
Elongation at BreakMin 10 %Min 10 % 
Reduction of AreaMin 40 %Min 40 % 


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