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Designation Cross-Reference

304C15 — ASTM Equivalent

Holding a datasheet that specifies 304C15 (BS)? The valve-grade equivalent, its properties, and certified supply of the matching ASTM grade.

What is the ASTM equivalent of 304C15?

304C15 is a BS designation corresponding to ASTM A351 CF8 (Cast 304 Stainless Steel (CF8)) 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.

A351 CF8

Stainless Steel

Cast 304 Stainless Steel (CF8) - cast form.

Service temperature-254°C to +538°C
Nominal compositionC ≤ 0.08%, Mn ≤ 1.50%, Si ≤ 2.00%, Cr 18.00–21.00%, Ni 8.00–11.00%, Mo ≤ 0.50% (residual)

Typical service: Food and beverage industry - dairy, brewery, beverage filling lines; Pharmaceutical process water and CIP systems; Marine (non-chloride seawater service) - deck service, freshwater systems

Reviewed by Materials Engineering, Vajra Industrial SolutionsDiscipline: Valve Metallurgy & Materials SelectionLast reviewed: 20 June 2026

Connected Engineering

Need valves in 304C15 / its ASTM equivalent?

We supply A351 CF8 valves - the 304C15 equivalent - with EN 10204 3.1 material certification. Share the datasheet for a 24-hour quote.

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