RapidBolt17-4 PH / Type 630
S17400
Precipitation-hardening stainless for specified load-bearing fasteners, shafts and valve components.
RFQ CHECK
State the final heat-treatment condition, product standard and required mechanical properties.
Precipitation-hardening stainless
17-4 PH Stainless Steel
17-4 PH fastener and component enquiries built around the specified heat-treatment condition — not just the alloy name.
Request a QuoteUNS S17400
Grade · condition · drawing · traceability
ENGINEERED SUPPLY, NOT OFF-THE-SHELFQUALIFIED PARTNER NETWORKLEAD TIME CONFIRMED PER RFQ
MATERIAL / APPLICATION / CONDITIONThe right alloy.
The right alloy.
The right specification.
17-4 PH (UNS S17400) is a chromium-nickel-copper precipitation-hardening stainless steel. It combines corrosion resistance with strength developed through heat treatment and is used for selected shafts, valve parts and engineered fasteners.
The condition is a procurement-critical detail. H900, H1025, H1150 and other specified conditions are not interchangeable: strength, hardness and toughness change with the treatment. EMG reviews the drawing and required condition before proposing supply through qualified partners.
Explore the materials reference
PROCUREMENT REFERENCE
What to specify
Condition-specific supply
H900 / H1025 / H1150
Examples of commonly specified ageing conditions; the drawing must identify the required route.
RFQ CHECK
These are treatment designations, not different UNS alloys or a promise of availability.
Reference designations are not stock, certified equivalence or guaranteed service suitability. Final product requirements govern every quotation.
WHERE THE SPECIFICATION MATTERS
Engineered around the application
Valve & actuator components
Stems, shafts and loaded parts where the approved design calls for condition-controlled precipitation-hardening stainless.
Pumps & mining equipment
Shafts, sleeves and mechanical parts with defined strength, fit and corrosion requirements.
Special fasteners
Bolts, studs and nuts to drawing with a specified final condition and matching assembly requirements.
ENGINEERING CHECKPOINTS
Control the details that matter.
01
Condition before strength
Do not apply a single tensile or hardness value to every 17-4 PH part. The governing specification, section size and heat-treatment condition determine acceptance.
02
Sour service is conditional
A 17-4 PH designation alone does not establish NACE MR0175 / ISO 15156 suitability. Check the permitted treatment, hardness and environmental restrictions with the responsible engineer.
03
Inspect the finished component
Specify heat-treatment records, mechanical tests, hardness, dimensional inspection and any additional non-destructive examination required by the drawing.
MATERIAL QUESTIONS
Before you order
YOUR SPECIFICATION. OUR SUPPLY NETWORK.Send the requirement.
Send the requirement.
Get a defined supply route.
For 17-4 PH Stainless Steel fasteners or machined components, send your drawing, quantity, material condition and required delivery date. EMG confirms sourcing, partner capacity, inspection records and lead time against your RFQ.
Drawing & dimensions
Revision, thread form, fits and surface finish.
Material & condition
UNS, product standard, heat treatment and service requirements.
Inspection & records
Specify EN 10204 3.1 / 3.2, PMI and witness requirements where applicable.
Managed supply through qualified partners; no claim of EMG-owned machinery or guaranteed stock.
Connected capabilities
TECHNICAL REFERENCES
ATI — 17-4 precipitation-hardening stainlessProducer references support alloy identification; the approved drawing and governing specification control acceptance. INCONEL and NITRONIC are trademarks of their respective owners. No authorised affiliation is implied.