UNS S17400 Bolting Products
UNS S17400 is listed in the PRECIPITATION-HARDENING STAINLESS STEEL (17-4 PH STAINLESS STEEL) material family. The reference data below should be checked against the governing product specification, product form and delivery condition before selection or certification.
The reference chemistry table for UNS S17400 lists Chromium (Cr): Chromium-based stainless composition; exact range is grade dependent; Nickel (Ni): Used to balance the stainless matrix and precipitation response; Copper / Niobium / Stainless steel (Cu/Nb/Al): Grade-dependent strengthening additions; Carbon (C): Low controlled carbon. Confirm exact limits and analysis tolerances against the governing standard and product form.
The mechanical-property table for UNS S17400 lists Tensile Strength: Approx. 900–1600 MPa; Yield Strength: Approx. 700–1400 MPa; Elongation: Approx. 5–20 %; Hardness: Approx. 250–500 HB HB. These are reference entries; supplied condition, dimensions, test method and governing specification control the requirements, and the figures are not design allowables.
Werkstoff / EN cross-reference for UNS S17400: 1.4542. This comparison does not guarantee interchangeability; confirm chemistry, product form and condition against the governing specification.
View Technical Information →Standard identification and material designation information for UNS S17400.
The reference chemistry table lists Chromium (Cr): Chromium-based stainless composition; exact range is grade dependent; Nickel (Ni): Used to balance the stainless matrix and precipitation response; Copper / Niobium / Stainless steel (Cu/Nb/Al): Grade-dependent strengthening additions; Carbon (C): Low controlled carbon. Confirm the governing standard, product analysis tolerances and product form before ordering.
| Element | Symbol | Composition |
|---|---|---|
| Chromium | Cr | Chromium-based stainless composition; exact range is grade dependent |
| Nickel | Ni | Used to balance the stainless matrix and precipitation response |
| Copper / Niobium / Stainless steel | Cu/Nb/Al | Grade-dependent strengthening additions |
| Carbon | C | Low controlled carbon |
| Iron | Fe | Balance |
| Other Elements | — | Controlled according to the applicable grade and product specification |
The table reports Tensile Strength: Approx. 900–1600 MPa; Yield Strength: Approx. 700–1400 MPa; Elongation: Approx. 5–20 %; Hardness: Approx. 250–500 HB HB as reference data for UNS S17400. Actual requirements depend on condition, dimensions, test method and specification; these values are not design allowables.
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | Approx. 900–1600 | MPa |
| Yield Strength | Approx. 700–1400 | MPa |
| Elongation | Approx. 5–20 | % |
| Hardness | Approx. 250–500 HB | HB |
UNS S17400 combines the characteristics of its stainless-steel family with grade-specific alloying and heat-treatment behavior suited to its intended service.
Strength is developed through solution treatment followed by controlled aging.
Aged conditions can provide much higher strength than annealed austenitic stainless steel.
Provides useful stainless corrosion resistance, with grade-specific differences.
Mechanical properties depend strongly on the selected aging condition.
UNS S17400 is selected for engineered components and bolting where the material characteristics of this grade match the service environment.
UNS S17400 is considered for high-strength bolting when its grade-specific corrosion, strength and temperature characteristics meet the service requirement.
UNS S17400 is considered for aerospace hardware when its grade-specific corrosion, strength and temperature characteristics meet the service requirement.
UNS S17400 is considered for pump and valve components when its grade-specific corrosion, strength and temperature characteristics meet the service requirement.
UNS S17400 is considered for precision mechanical components when its grade-specific corrosion, strength and temperature characteristics meet the service requirement.
Always specify the exact UNS grade and aging condition.
Use condition-specific mechanical and fatigue data for design.
Check galling, hydrogen exposure and corrosion compatibility for threaded applications.
The commonly listed Werkstoff / EN cross-reference for UNS S17400 is 1.4542. Treat this as a grade comparison, not a guarantee of interchangeability. Verify chemistry, product form, condition and governing specification against the supplier certificate before substitution.
Our engineering team can help you select suitable materials based on operating temperature, pressure and service conditions.