17-4 PH Stainless Steel material center
17-4 PH components where high strength drives the specification.
Source 17-4 PH / Type 630 flanges and related pressure components with the required product form, age-hardening condition, mechanical properties, and corrosion limits clearly defined.
- ASTM / ASMESpecification-led supply
- 1 grade routeOne focused source
- Global projectsExport documentation
Product routes
Start with the component. Then lock the material.
These links use the existing catalog structure. No additional material-by-product taxonomy archives are created.
Flanges
Weld neck, blind, slip-on, threaded, lap joint, and socket weld flange routes.
Browse flanges 02Pipe fittings
Elbows, tees, reducers, and end caps for welded or specified piping systems.
Browse pipe fittings 03Valves
Ball, gate, globe, check, and butterfly valve routes for process service.
Browse valvesGrade selector
17-4 PH Stainless Steel grade routes.
Use the cards to build a shortlist. Final suitability remains an engineering and code decision.
17-4 PH / Type 630
UNS S17400 · Precipitation-hardening stainless steel
A martensitic precipitation-hardening stainless grade whose strength and toughness are established through solution treatment and controlled aging.
17-4 PH is selected when a project needs substantially higher strength than common austenitic stainless grades and its corrosion performance is acceptable. The required condition—such as a project-specified H condition—is part of the material specification, not an optional detail.
Procurement comparison
Translate the material name into order data.
The same commercial alloy name can map to different forging, fitting, and casting designations. State the complete material and product-form specification.
| Grade | Selection cue | Typical project context | Procurement control |
|---|---|---|---|
| 17-4 PH / Type 630 | High-strength stainless | High-strength shafts, valve parts, mechanical components, and project-specific flanges or pressure parts. | State UNS S17400, ASTM product standard, required H condition, mechanical properties, hardness, impact testing, and corrosion limits. |
Engineering note: This page supports early-stage procurement. The responsible engineer must verify corrosion, pressure, temperature, fabrication, compatibility, and code requirements.
RFQ readiness
Five controls for a comparable quotation.
A precise technical basis prevents substitutions and makes supplier offers easier to compare.
Send your requirement to SASA FLANGE- 01Component and quantity
Product type, size range, quantity, facing or end connection, and dimensional standard.
- 02Exact material route
ASTM specification, grade, UNS number where applicable, product form, and heat-treatment condition.
- 03Design conditions
Fluid, concentration, contaminants, design pressure and temperature, minimum metal temperature, and operating cycle.
- 04Fabrication controls
Welding, post-weld heat treatment, hardness, cleanliness, pickling or passivation, and repair restrictions.
- 05Inspection and records
Material certificates, PMI, NDE, pressure testing, corrosion tests, traceability, marking, and third-party inspection.
Standards map
Start with the governing product standard.
Official standards define scope and requirements. The purchase order should name the applicable edition required by the project.
Age-hardening stainless steel forgings for general use.
Bar and shapesASTM A564/A564MHot-rolled and cold-finished age-hardening stainless steel bars and shapes.
Flange dimensionsASME B16.5Dimensional and pressure-rating basis when the material is accepted by the design specification.
Technical FAQ
Direct answers for early material screening.
Structured for buyers, engineers, search engines, and future answer-engine retrieval.
What is 17-4 PH Stainless Steel?
17-4 PH is a precipitation-hardening stainless steel identified as Type 630 or UNS S17400. It can deliver high strength after age hardening, but properties and corrosion behavior depend strongly on the supplied heat-treatment condition.
How do I choose between the listed 17-4 PH Stainless Steel grades?
17-4 PH is selected when a project needs substantially higher strength than common austenitic stainless grades and its corrosion performance is acceptable. The required condition—such as a project-specified H condition—is part of the material specification, not an optional detail.
Can the same alloy designation be used for flanges, fittings, and valves?
The same alloy family can be used across a pressure system, but the ASTM grade designation can change with product form and manufacturing route. Confirm the forging, wrought-fitting, or casting specification together with the dimensional standard and pressure rating.
What should a 17-4 PH Stainless Steel RFQ include?
Include component type, exact grade and UNS where applicable, ASTM product specification, size, schedule or bore, pressure class, facing or end connection, quantity, service conditions, heat treatment, testing, certification, marking, and inspection requirements.
Does the material standard also define flange, fitting, or valve dimensions?
Usually not. The purchase specification normally combines a material standard with a dimensional or pressure-rating standard such as ASME B16.5, B16.9, B16.11, B16.34, an EN or DIN standard, or a project-specific specification.
Procurement support
Turn the material shortlist into a controlled RFQ.
Send your component list, service conditions, project standards, and inspection requirements for a specification-led quotation.