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SS 17-4 PH Studs Manufacturer & Exporter in India

Explore SS 17-4 PH Studs Manufacturer & Exporter in India manufactured for demanding industrial applications with reliable strength, corrosion resistance and compliance with international standards.
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-196

Min Temp

870

Max Temp

🌡

870

Suitable for continuous service up to approximately 870°C under typical operating conditions.

⚡

620

Typical tensile strength around 620 MPa depending on product form and heat treatment.

🛡

Very Good

Very Good corrosion resistance in a wide range of industrial environments.

⚖

8

Typical density is approximately 8.0 g/cm³.

Product Overview

What are SS 17-4 PH Studs?

SS 17-4 PH studs are high-strength, precipitation-hardening stainless steel fasteners manufactured from UNS S17400 bar stock conforming to ASTM A564. The alloy’s unique combination of chromium (15-17.5%), nickel (3-5%), and copper (3-5%) enables martensitic transformation and precipitation hardening, delivering tensile strengths up to 1310 MPa in the H900 condition.

These studs offer excellent corrosion resistance, superior mechanical properties, and outstanding toughness in both base metal and welds. SS 17-4 PH studs are widely specified for critical bolted joints in aerospace, chemical processing, power generation, and marine applications where high strength and moderate corrosion resistance are required.

Quick Specifications

MaterialSS 17-4 PH
UNS NumberS17400
DIN Number1.4542
Material StandardASTM A564
Stud Standard (Metric)DIN 976 / DIN 975
Stud Standard (Inch)ASME B16.5 / B18.31.2
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M64 / ¼"-2½"
Tensile Strength930-1310 MPa (135-190 ksi)
Yield Strength860-1180 MPa (125-171 ksi)
Hardness28-44 HRC (condition dependent)
? All material certified by NABL-accredited laboratory. PMI and heat treatment charts available on request.

Complete the Fastener Set

Other SS 17-4 PH Fastener Products Available from RealBolt

RealBolt also manufactures the complete SS 17-4 PH fastener range from certified stainless steel bar stock, including SS 17-4 PH Bolts, SS 17-4 PH Nuts, SS 17-4 PH Screws, SS 17-4 PH Washers, and SS 17-4 PH Threaded Rods. All SS 17-4 PH fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
SS 17-4 PH Bolts
SS 17-4 PH Nuts
SS 17-4 PH Screws
SS 17-4 PH Washers
SS 17-4 PH Threaded Rods

Technical Data

SS 17-4 PH Studs Dimensions, Sizes & Thread Standards

SS 17-4 PH Studs are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 976 (full thread) / DIN 975 (threaded rod) / ASME B16.5 (stud bolts for flanges). Custom cut lengths available in 5mm increments. Inch dimensions per ASME B18.31.2.

Stud Bolt Dimensions - Metric (DIN 976)

Size (M)Pitch (mm)Stud Length (mm)Thread Length (mm)
M61.040-2000Full
M81.2540-2000Full
M101.550-2000Full
M121.7560-2000Full
M162.080-2000Full
M202.5100-2000Full
M243.0120-2000Full
M303.5150-2000Full
M364.0180-2000Full
M424.5200-2000Full
M485.0250-2000Full
M565.5300-2000Full
M646.0350-2000Full

Dimensional & Material Standards

StandardCoversThread
DIN 976Stud bolts, full threadMetric
DIN 975Threaded rods, full threadMetric
ASME B16.5Stud bolts for flangesUNC
ASME B18.31.2Continuous threaded studsUNC/UNF
ISO 898-1Mechanical propertiesMetric
Material StandardRequirement
ASTM A564Bar/rod - UNS S17400
ASTM A693Plate/sheet - 17-4 PH
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

SS 17-4 PH Chemical Composition

SS 17-4 PH Studs are manufactured from an iron-chromium-nickel alloy with chromium (16–26%), nickel (8–28%), and grade-specific molybdenum additions per ASTM and ASTM A193/A194. Chromium content governs the self-healing passive oxide film; molybdenum (2–6%) enhances chloride pitting resistance; and carbon content determines sensitization risk in welded assemblies.

Chemical Composition per ASTM A564

ElementComposition (%)
Chromium (Cr)15.0-17.5
Nickel (Ni)3.0-5.0
Copper (Cu)3.0-5.0
Manganese (Mn)1.0 max
Silicon (Si)1.0 max
Carbon (C)0.07 max
Phosphorus (P)0.04 max
Sulfur (S)0.03 max
Columbium + Tantalum (Nb+Ta)0.15-0.45
Iron (Fe)Balance
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why SS 17-4 PH Alloy Composition Matters for Studs

Precipitation Hardening — High Strength
The copper and niobium content enables precipitation hardening, allowing SS 17-4 PH studs to reach tensile strengths up to 1310 MPa after heat treatment (H900–H1150), making them ideal for high-load bolted joints.
Chromium — Corrosion Resistance
With 15–17.5% chromium, SS 17-4 PH offers corrosion resistance superior to standard martensitic stainless steels, suitable for mildly aggressive environments and atmospheric exposure.
Nickel — Toughness & Ductility
Nickel content improves toughness and ductility, ensuring reliable performance in dynamic and cyclic loading applications such as turbine and compressor assemblies.

Fastener Performance

SS 17-4 PH Studs Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for SS 17-4 PH Studs per ASTM. SS 17-4 PH studs achieve 620 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Stud SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M121209645
M1630024090
M20600480140
M241050840200
M3021001680320
M3636002880460
?? Anti-galling: Use molybdenum-based or PTFE anti-seize. Lubricated values assume K=0.15. Avoid over-torquing to prevent thread galling in stainless steels.

Industry Applications

SS 17-4 PH Studs Applications — Industries & End Uses

SS 17-4 PH Studs from RealBolt are specified across food and dairy, pharmaceutical, marine, chemical processing, and oil and gas where very good corrosion resistance and 620 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.
SS 17-4 PH studs are widely used in jet engine casings, turbine housing flanges, and compressor assemblies where high strength, fatigue resistance, and moderate corrosion resistance are critical. AMS 5643 and ASTM A564 compliance ensures reliability in demanding aerospace environments.
Stud bolts for pressure vessel closures, heat exchanger channel covers, and reactor nozzles in chemical plants. SS 17-4 PH offers superior strength and resistance to stress corrosion cracking compared to austenitic grades, making it ideal for aggressive process media.
Studs for steam turbine casings, HRSG ducting, and nuclear reactor internals where high strength and resistance to chloride stress corrosion are required. SS 17-4 PH is specified for bolted joints exposed to cyclic thermal and pressure loads.
Used in propulsion shaft couplings, deck machinery, and subsea valve assemblies. SS 17-4 PH provides a balance of strength and corrosion resistance for marine atmospheres and splash zones, outperforming standard martensitic stainless steels.

SS 17-4 PH Studs Standards & International Certifications

SS 17-4 PH Studs from RealBolt Engineering Industries are manufactured to internationally recognised fastener dimensional standards covering thread form, tolerances, strength grades, and quality requirements. Every batch ships with EN 10204 MTC 3.1/3.2, IS 12427 compliance, ISO 3506 material certification, NACE MR0175, and PMI (XRF) reports — available on request for all orders.
Standards
DIN 938 DIN 939 DIN 976-1 ASME B18.31.2 IS 1364 IS 1367 IS 12427
Certifications
ISO 9001:2015PED 2014/68/EUNABL LabMTC 3.1 / 3.2

Buy SS 17-4 PH Studs from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified SS 17-4 PH Studs — for competitive pricing, EN 10204 MTC 3.1/3.2 documentation, and fast Mumbai dispatch. Standard sizes are ex-stock; custom dimensions accepted with 2–3 week lead time. Request your quote today.
022-6743-7972
+91 90226 36025
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Answers for Buyers

SS 17-4 PH Studs — Frequently Asked Questions

Browse expert answers to common questions about SS 17-4 PH Studs from RealBolt — covering ASTM A193/A194 grades, chloride resistance, temperature limits, sensitization, sizes, and MTC documentation. Contact our technical team directly for project-specific guidance on SS 17-4 PH studs selection and pricing.
SS 17-4 PH stud bolts are available to DIN 976 (metric full thread), DIN 975 (threaded rod), ASME B16.5 (flange studs), and ASME B18.31.2 (inch continuous thread). Custom thread forms (UNC, UNF, BSW, BSF) and cut lengths are available on request with typical lead times of 10-15 working days.
Use molybdenum-based or PTFE anti-seize compound (such as Molykote 1000 or Loctite LB 8014) on threads and nut faces to prevent galling. Avoid copper-based anti-seize, as it can cause galvanic corrosion with stainless steel. Lubricated torque values should be reduced by 20% compared to dry assembly.
Yes – SS 17-4 PH offers better corrosion resistance than standard martensitic stainless steels and is suitable for marine atmospheres, splash zones, and deck machinery. For continuous seawater immersion, consider duplex or super duplex grades for enhanced pitting resistance.
No formal MOQ for standard metric sizes (M12-M36) held ex-stock – we supply from single pieces for urgent maintenance. Custom cut lengths or inch sizes typically require a 10 kg minimum. Price breaks are available at 50 pcs, 200 pcs, and 500 pcs.

Industrial Cities We Serve:

  • Ahmedabad
  • Aurangabad
  • Bengaluru
  • Chennai
  • Coimbatore
  • Faridabad
  • Gandhidham
  • Greater Noida
  • Gurugram
  • Hazira
  • Hosur
  • Hyderabad
  • Jamnagar
  • Jamshedpur
  • Ludhiana
  • Mumbai
  • Mundra
  • Mysuru
  • Nagpur
  • Nashik
  • Navi Mumbai
  • Noida
  • Pune
  • Rajkot
  • Sanand
  • Surat
  • Thane
  • Tiruppur
  • Vadodara
  • Visakhapatnam

Countries We Export To:

  • US
  • Canada
  • Mexico
  • Germany
  • UK
  • France
  • Italy
  • Spain
  • Netherlands
  • Belgium
  • Poland
  • Sweden
  • Norway
  • Denmark
  • Turkey
  • UAE
  • Saudi Arabia
  • Qatar
  • Oman
  • Kuwait
  • Bahrain
  • South Africa
  • Egypt
  • Nigeria
  • Australia
  • New Zealand
  • Singapore
  • Malaysia
  • Indonesia
  • Thailand
  • Vietnam
  • South Korea
  • Japan
  • Brazil