Definition
A2-70 is an ISO 3506-1 property class for austenitic stainless fasteners. In commercial catalogs it typically maps to 304 / SUS304 stainless steel with a minimum tensile strength of 700 MPa for the fastener.
Spec facts US buyers ask for
- Material grade: SUS304 / 304 stainless
- Property class: A2-70 (ISO 3506-1)
- Common standards: DIN 912 / ISO 4762 / GB70.1
- Typical docs: Mill Test Certificate (MTC), RoHS, REACH
- Origin: China manufacturing, US-facing fulfillment workflow
When A2-70 is the right call
- Indoor equipment and frames
- Electronics / instrumentation housings
- General industrial fixtures needing corrosion resistance without 316 cost
FAQ
Q: Is A2-70 the same as 18-8?
A: Closely related commercially; always confirm chemistry and property class on the MTC.
Q: Do you provide salt-spray data?
A: When available for a lot, hours are listed on the product record.
Q: Can I order samples before a production MOQ?
A: Use sample fields on the SKU or contact sales for a trial pack.