AISI 404 Bolting Products
AISI 404 is listed in the FERRITIC 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 AISI 404 lists Chromium (Cr): Primary ferritic stainless alloying element; specification-controlled; Carbon (C): Low carbon level relative to martensitic grades; Nickel (Ni): Low / controlled addition depending on specification; Iron (Fe): Balance. Confirm exact limits and analysis tolerances against the governing standard and product form.
The mechanical-property table for AISI 404 lists Tensile Strength: Approx. 450–650 MPa; Yield Strength: Approx. 250–400 MPa; Elongation: Approx. 18–30 %; Hardness: Approx. 75–95 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 AISI 404: 1.4000. 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 AISI 404.
The reference chemistry table lists Chromium (Cr): Primary ferritic stainless alloying element; specification-controlled; Carbon (C): Low carbon level relative to martensitic grades; Nickel (Ni): Low / controlled addition depending on specification; Iron (Fe): Balance. Confirm the governing standard, product analysis tolerances and product form before ordering.
| Element | Symbol | Composition |
|---|---|---|
| Chromium | Cr | Primary ferritic stainless alloying element; specification-controlled |
| Carbon | C | Low carbon level relative to martensitic grades |
| Nickel | Ni | Low / controlled addition depending on specification |
| Iron | Fe | Balance |
| Other Elements | — | Controlled according to the applicable grade and product specification |
The table reports Tensile Strength: Approx. 450–650 MPa; Yield Strength: Approx. 250–400 MPa; Elongation: Approx. 18–30 %; Hardness: Approx. 75–95 HB HB as reference data for AISI 404. Actual requirements depend on condition, dimensions, test method and specification; these values are not design allowables.
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | Approx. 450–650 | MPa |
| Yield Strength | Approx. 250–400 | MPa |
| Elongation | Approx. 18–30 | % |
| Hardness | Approx. 75–95 HB | HB |
AISI 404 combines the characteristics of its stainless-steel family with grade-specific alloying and heat-treatment behavior suited to its intended service.
Provides a magnetic ferritic microstructure and stable service behavior.
Offers useful resistance to atmospheric and general industrial corrosion.
Selected grades can offer practical machinability for fabricated and machined parts.
Ferritic structure avoids the hardening response associated with martensitic grades.
AISI 404 is selected for engineered components and bolting where the material characteristics of this grade match the service environment.
AISI 404 is considered for automotive and exhaust hardware when its grade-specific corrosion, strength and temperature characteristics meet the service requirement.
AISI 404 is considered for industrial equipment when its grade-specific corrosion, strength and temperature characteristics meet the service requirement.
AISI 404 is considered for architectural and fabricated components when its grade-specific corrosion, strength and temperature characteristics meet the service requirement.
AISI 404 is considered for machined stainless parts when its grade-specific corrosion, strength and temperature characteristics meet the service requirement.
Confirm the applicable product specification and heat treatment.
Check corrosion and temperature exposure before selection.
Consider weldability and magnetic requirements for the application.
The commonly listed Werkstoff / EN cross-reference for AISI 404 is 1.4000. 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.