Stainless Steel 17-4ph Fasteners

AISI 4130 Bolts

17-4ph Fasteners are manufactured in varieties of bolts, stud bolts, screws, threaded rods, nuts, washers & other customised fastener parts, with coarse and fine threads. 17-4ph stainless steel fasteners are high tensile components, produced from forging stock and bar stock and heat treated to specification, to meet desired mechanical properties. 17-4ph fasteners can be produced in metric and imperial sizes as per DIN, ISO, ASME or any international dimension standards.

17-4ph is a chromium-nickel-copper alloyed martensitic grade precipitation hardening stainless steel with excellant combination of high strength, corrosion resistance and mechanical properties a temperatures upto 600 deg fahrenheit or 316 deg celcius. 17-4ph stainless steel is a high tensile alloy with prominent usage as fasteners for aerospace industries.

17-4ph Properties

Chemical Composition

  • Carbon C 0.07% Max
  • Manganese Mn 1.00% max
  • Sulphur S 0.03% max
  • Phophorous P 0.04% max
  • Silicon Si 1.00% max
  • Nickel Ni 3.00-5.00
  • Chromium Cr 15.0-17.5%
  • Copper Cu 3.00-5.00%
  • Nb+Tantalum Nb+Ta 0.15-0.45%
  • Iron Fe Balance

Mechanical Properties

  • Tensile Strength : 1310 MPa
  • Yield Strength : 1170 MPa
  • Elongation : 10% min
  • Reduction of Area : 40% min
  • Hardness, Brinell : 388 min

17-4ph Grade Equivalent

AISI Grade European Name UNS Designation DIN Equivalent Alloy SUS
17-4ph   UNS S17400 1.4542 630 630

17-4ph Fastening Products

17-4ph Specifications

Specifications Material Form Products
ASTM A564 Type 630/UNS S17400    
ASTM A693 Type 630/UNS S17400    
ASTM A705 Type 630/UNS S17400