S34700 — ASTM Equivalent
Holding a datasheet that specifies S34700 (UNS)? The valve-grade equivalent, its properties, and certified supply of the matching ASTM grade.
What is the ASTM equivalent of S34700?
S34700 is a UNS designation corresponding to ASTM A182 F347 (Stabilised 347 Stainless Steel (Forged F347)) for industrial valve service. The full grade data is below - equivalence is by nominal chemistry and mechanical class, so confirm composition and heat-treat condition against the governing standard before substituting in critical service.
A182 F347
Stainless SteelStabilised 347 Stainless Steel (Forged F347) - forged form.
Typical service: Nuclear power (BWR/PWR) - piping valves in reactor coolant auxiliary systems; F347 resists sensitisation in high-temperature radioactive water service; Ethylene cracker and catalytic reformer - sustained temperatures above 450°C where 316L would sensitise; Hot hydrogen service (hydroprocessing) - niobium stabilisation prevents intergranular attack under Nelson curve conditions
Connected Engineering
Need valves in S34700 / its ASTM equivalent?
We supply A182 F347 valves - the S34700 equivalent - with EN 10204 3.1 material certification. Share the datasheet for a 24-hour quote.