Valve Material Reference
ASTM A351 CF8M Valve
SS 316 Cast (CF8M)ASTM A351 CF8M is the cast austenitic stainless steel grade equivalent to wrought SS 316.
Form
Cast
Max Temp
+454°C (+850°F) continuous; +816°C (+1500°F) for Type 316H
Min Temp
−254°C (cryogenic capable)
Category
Stainless Steel
What is ASTM A351 CF8M?
ASTM A351 CF8M (SS 316 Cast (CF8M)) is a stainless steel valve material. ASTM A351 CF8M is the cast austenitic stainless steel grade equivalent to wrought SS 316. Temperature range: −254°C to +454°C (−425°F to +850°F).
- Form:
- cast
- Max Temp:
- +454°C (+850°F) continuous; +816°C (+1500°F) for Type 316H
- Min Temp:
- −254°C (cryogenic capable)
Chemical Composition - ASTM A351 CF8M
Temperature Range
−254°C to +454°C (−425°F to +850°F)
Maximum Temperature
+454°C (+850°F) continuous; +816°C (+1500°F) for Type 316H
Minimum Temperature
−254°C (cryogenic capable)
Vajra Industrial Solutions manufactures and supplies valves in ASTM A351 CF8M (SS 316 Cast (CF8M)) for sulphuric acid (dilute, <20%), with EN 10204 3.1 material traceability on every order.
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Equivalent Grades - ASTM A351 CF8M
| Standard | Equivalent Grade |
|---|---|
| ASTM wrought equiv. | 316 SS (A240/A276 Type 316) |
| EN | 1.4408 (GX5CrNiMo19-11-2) |
| BS 1504 | 316C16 |
| JIS | SCS14 |
| DIN | GX6CrNiMo18-10 |
Suitable Services
Sulphuric acid (dilute, <20%)
Phosphoric acid
Seawater (limited - duplex preferred for prolonged exposure)
Chlorinated water and brine
Nitric acid (certain concentrations)
Food, beverage, and pharmaceutical process
Cryogenic service (LNG, LOX, LN₂)
Pulp and paper chemicals
Not Suitable For
Strong sulphuric acid (>40%) - use Hastelloy C276
Hydrochloric acid (any concentration) - use Hastelloy C276
Hydrofluoric acid - use Monel or Hastelloy
High-chloride seawater in crevice zones (use duplex or super duplex)
Temperatures between 450°C–850°C (sensitisation zone - use CF3M/316L)
Valve Body Applications
Gate valve bodies for chemical and marine service
Globe valve bodies for corrosive process
Ball valve bodies - two-piece and three-piece designs
Check valve bodies
Butterfly valve bodies
Strainer bodies in corrosive service
Trim Applications
SS 316 trim for ball valves (stem, ball)
CF8M gate valve wedge and stems
Globe valve disc and seats - often hard-faced
Typical Valve Types in ASTM A351 CF8M
Gate valves: Class 150–1500 per ASME B16.34
Globe valves: Class 150–900
Ball valves: Class 150–600 (two-piece, full bore)
Check valves: Class 150–600
Butterfly valves: Class 150–300
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We supply ASTM A351 CF8M (SS 316 Cast (CF8M)) valves with full certification documentation — EN 10204 3.1/3.2 MTCs and hydrotest certs as standard.