430 (S43000) | BYBOLT

What is 430 stainless steel and its applications?

430 stainless steel (UNS S43000) is a ferritic chromium grade used in mildly corrosive environments. Common material applications include kitchen equipment, appliance components and general indoor hardware where formability and corrosion resistance are required.

Kitchen equipment: Components exposed to suitable cleaning and service conditions.
Appliances: Panels, fittings and associated hardware.
Indoor assemblies: General components where the environment does not require a more corrosion-resistant grade.

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Choose your 430 product

Engineering Application & Selection Guide

430 has a ferritic structure and is not hardened by a quench-and-temper treatment. Its magnetic response distinguishes it from annealed austenitic grades and can be relevant to equipment requirements.

430 flat washers — For formed washers, specify thickness, flatness and bearing dimensions for the clamped surface.
430 custom fasteners — For clips or shaped retaining parts, define forming direction, radii and the required final dimensions.
430 hex bolts — For a drawing that calls for threaded 430 hardware, establish the actual strength requirement and manufacturing route before approval.

Consider 304 when the exposure or fabrication requirements need an austenitic alternative. Do not specify 430 as a non-magnetic material or assume a high-strength bolt class from its stainless designation. The lowest-cost alloy is useful only if the joint meets its load and corrosion requirements.

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430 Composition

Selected typical composition · wt.%

ElementWeight %

Cr: 16.2%
C: 0.05%

ASTM / ASME specifications by product form

Finished-product requirements

Specify the finished-fastener mechanical requirements, condition and inspection separately from the starting-stock specification.

430 hex bolt requirements ↗

Fasteners · dimensional references

Product	Reference
Hex bolts	ISO 4014 / ISO 4017 · ASME B18.2.1
Threaded studs	DIN 976-1 · ASME B18.31.2
Hex nuts	ISO 4032 · ASME B18.2.2
Socket head screws	ISO 4762 · ASME B18.3
Flat washers	ISO 7089 / ISO 7090 · ASME B18.21.1
Custom fasteners	Customer drawing

Raw-material specifications

Product form / scope	Reference
Product-form-specific reference · Select the applicable part and product condition.	EN 10088

Dimensions do not define material or finished-part compliance. Specify the grade, condition and applicable requirements.

How to specify round bar, plate, wire and strip ↗

430 Mechanical Properties

Reference sample and condition

Data basis: Producer typical reference
Test sample form: Cold-rolled coil / sheet
Test temperature: Room temperature
Gauge length: A80

Key properties	Value
Tensile strength	520 MPa
0.2% yield strength	365 MPa
Elongation	26%

Outokumpu · Stainless Steel Handbook · Tables 2:1, 2:2, 7:5 & 7:6 · PDF pages 52–53 for tensile values; hosted by SCI ↗

Procurement and application guide

Specify the material and final condition

Ferritic 430 is not hardened by quenching; define the formed condition.

Material forms in the technical reference: Sheet · Strip · Coil.

Define the finished-part acceptance

Include the material or bolting specification, required final condition, dimensions and quantity. State the service medium, temperature and loading where known. Agree the required tests, inspection coverage and acceptance criteria for the finished part.

Start with the information you have

Send a drawing or share the product form and dimensions. Identify any undecided requirements for review rather than copying a typical property value into the purchase order.

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