ASTM A216 WCA, WCB, WCC (CARBON STEEL HIGH-TEMP.)
The ASTM A216 specification covers 3 grades of carbon steel (WCA, WCB, and WCC), which feature slight differences in terms of chemical and mechanical properties. These grades for cast valves bodies match carbon steel pipes in grades A53, A106, API 5L.
ASTM A216 steel castings shall be heat treated and can be manufactured in the annealed, or normalized, or normalized and tempered conditions. The surface of steel castings shall be free of adhering elements such as sand, cracks, hot tears, and other defects.
| ASTM A216 carbon steel valves (cast), material chart | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| ASTM A216 GRADE | C | Mn | P | S | Si | Cu | Ni | Cr | Mo | V |
| WCA UNS J02502 | 0.25(1) | 0.70(1) | 0.04 | 0.045 | 0.60 | 0.30 | 0.50 | 0.50 | 0.20 | 1.00 |
| WCB UNS J03002 | 0.30(2) | 1.00(2) | 0.04 | 0.045 | 0.60 | 0.30 | 0.50 | 0.50 | 0.20 | 1.00 |
| WCC UNS J02503 | 0.25(3) | 1.20(3) | 0.04 | 0.045 | 0.60 | 0.30 | 0.50 | 0.50 | 0.20 | 1.00 |
ASTM A352 LCB/LCC (CARBON STEEL LOW-TEMP.)
The ASTM A352 specification covers multiple grades of low-temperature carbon steel (called LCA, LCB, LCC, LC1, LC2, LC3, LC4, LC9, CA6NM) for cast steel valves, flanges, fittings, and other pressure-containing parts.
Chemical composition of A352 cast valves Gr. LCA/LCB/LCC (valve material chart):
| GRADE | C | Si | Mn | Cr | Mo | Ni | Cu | Nb | V |
| ASTM A352 LC3 | 0.15 | 0.6 | 0.65 | 3.5 | |||||
| ASTM A352 LCA | 0.25 | 0.6 | 0.7 | 0.5 | 0.2 | 0.5 | 0.3 | 0.03 | |
| ASTM A352 LCB | 0.3 | 0.6 | 1 | 0.5 | 0.2 | 0.5 | 0.3 | 0.03 | |
| ASTM A352 LCC | 0.25 | 0.6 | 1.2 | 0.5 | 0.2 | 0.5 | 0.03 |
ASTM A351 CF8/CF8M (STAINLESS STEEL)
The ASTM A351 specification covers austenitic steel castings for valves, flanges, fittings, and other pressure-containing parts.
The most common grades are ASTM A351 CF3, CF8 (SS304), and CF8M (SS316).
The steel shall be made by the electric furnace process with or without separate refining such as argon-oxygen decarburization.
Any ASTM A351 cast part shall receive heat treatment followed by a quench in water or rapid cooling. The steel shall conform to the chemical and mechanical requirements set by the specification.
ASTM A351 stainless steel valves, chemical compositionShow 10202550100 entriesSearch:
| ASTM A351 GRADE | UNS | C | Mn | Si | S | P | Cr | Ni | Mo | Nb | V | N | Cu |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CF3+CF3A | J9270 | 0.03 | 1.5 | 2 | 0.04 | 0.04 | 17.0-21.0 | 8.0-11.0 | 0.5 | ||||
| CF8+CF8A | J9260 | 0.08 | 1.5 | 2 | 0.04 | 0.04 | 18.0-21.0 | 8.0-11.0 | 0.5 | ||||
| CF3M+CF3MA | J9280 | 0.03 | 1.5 | 1.5 | 0.04 | 0.04 | 17.0-21.0 | 9.0-13.0 | 2.0-3.0 | ||||
| CF8M | J9290 | 0.08 | 1.5 | 1.5 | 0.04 | 0.04 | 18.0-21.0 | 9.0-12.0 | 2.0-3.0 | ||||
| CF3MN | J92804 | 0.03 | 1.5 | 1.5 | 0.04 | 0.04 | 17.0-21.0 | 9.0-13.0 | 2.0-3.0 | 0.10-.20 | |||
| CF8C | J92710 | 0.08 | 1.5 | 2 | 0.04 | 0.04 | 18.0-21.0 | 9.0-12.0 | 0.5 | -1 | |||
| CF10 | J92950 | 0.04-0.10 | 1.5 | 2 | 0.04 | 0.04 | 18.0-21.0 | 8.0-11.0 | 0.5 | ||||
| CF10M | J92901 | 0.04-0.10 | 1.5 | 1.5 | 0.04 | 0.04 | 18.0-21.0 | 9.0-12.0 | 2.0-3.0 | ||||
| CH8 | J9340 | 0.08 | 1.5 | 1.5 | 0.04 | 0.04 | 22.0-26.0 | 12.-15.0 | 0.5 | ||||
| CH10 | J93401 | 0.04-0.10 | 1.5 | 2 | 0.04 | 0.04 | 22.0-26.0 | 12.-15.0 | 0.5 | ||||
| CH20 | J93402 | 0.04-0.20 | 1.5 | 2 | 0.04 | 0.04 | 22.0-26.0 | 12.0-15.0 | 0.5 | ||||
| CK20 | J94202 | 0.04-0.20 | 1.5 | 1.75 | 0.04 | 0.04 | 23.0-27.0 | 19.0-22.0 | 0.5 | ||||
| HK30 | J94203 | 0.25-0.35 | 1.5 | 1.75 | 0.04 | 0.04 | 23.0-27.0 | 19.0-22.0 | 0.5 | ||||
| HK40 | J94204 | 0.35-0.45 | 1.5 | 1.75 | 0.04 | 0.04 | 23.0-27.0 | 19.0-22.0 | 0.5 | ||||
| HT30 | N08030 | 0.25-0.35 | 2 | 2.5 | 0.04 | 0.04 | 13.0-17.0 | 33.0-37.0 | 0.5 | ||||
| CF10MC | 0.1 | 1.5 | 1.5 | 0.04 | 0.04 | 15.0-18.0 | 13.0-16.0 | 1.7-2.25 | -2 | ||||
| CN7M | N0807 | 0.07 | 1.5 | 1.5 | 0.04 | 0.04 | 19.0-22.0 | 27.5-30.5 | 2.0-3.0 | 3.0-4.0 | |||
| CN3MN | J94651 | 0.03 | 2 | 1 | 0.01 | 0.04 | 20.0-22.0 | 23.5-25.5 | 6.0-.0 | 0.18-.26 | 0.75 | ||
| CE8MN | 0.08 | 1 | 1.5 | 0.04 | 0.04 | 22.5-25.5 | 8.0-11.0 | 3.0-.5 | 0.10-.30 | ||||
| CG-6MMN | J93790 | 0.06 | 4.0-6.0 | 1 | 0.03 | 0.04 | 20.5-23.5 | 11.5-13.5 | 1.50-3.0 | 0.10-.30 | 0.10-.30 | 0.20-.40 |
- Grade CF8C shall have a Niobium content 8 times above the Carbon but not over 1.00%.
- Grade CF10MC shall have a Niobium content 10 times above the Carbon but not over 1.20%.
MECHANICAL PROPERTIES CAST STEEL VALVES CHART
| Minimum Steel Mechanical Properties | Modulus | Approximate | ||||
|---|---|---|---|---|---|---|
| ASTM CAST GRADE | Tensile strength (psi) | Yield strength (psi min) | Elongation (at 2 inches) | Reduction of Area (%) | ||
| ASTM A216 Grade WCB | 70,000 | 36,000 | 22 | 35 | 27.9 | 137-1 87 |
| ASTM A352 Grade LCB | 65,000 | 35,000 | 24 | 35 | 27.9 | 137-1 87 |
| ASTM A217 Grade C5 | 90,000 | 60,000 | 18 | 35 | 27.4 | 241 Max. |
| ASTM A217 Grade WC1 | 65,000 | 35,000 | 24 | 35 | 29.9 | 215 Max. |
| ASTM A217 Grade WC6 | 70,000 | 40,000 | 20 | 35 | 29.9 | 215 Max. |
| ASTM A217 Grade WC9 | 70,000 | 40,000 | 20 | 35 | 29.9 | 241 Max. |
| ASTM A352 Grade LC3 | 65,000 | 40,000 | 24 | 35 | 27.9 | 137 |
| ASTM A217 Grade C12 | 90,000 | 60,000 | 18 | 35 | 27.4 | 180-240 |
| ASTM A351 Grade CF-8 | 65,000 | 28,000 | 35 | – | 28 | 140 |
| ASTM A351 Grade CF-8M | 70,000 | 30,000 | 30 | – | 28.3 | 156-170 |
| ASTM A126 Class B | 31,000 | – | – | – | – | 160-220 |
| ASTM A126 Class C | 41,000 | – | – | – | – | 160-220 |
| ASTM A395 Type 60-45-15 | 60,000 | 45,000 | 15 | – | 23-26 | 143-207 |
| ASTM A439 Type D-2B | 58,000 | 30,000 | 7 | – | – | 148-211 |
| ASTM B62 | 30,000 | 14,000 | 20 | 17 | 13.5 | 55-65* |
| ASTM B143 Alloy 1A | 40,000 | 18,000 | 20 | 20 | 15 | 75-85* |
| ASTM B147 Alloy 8A | 65,000 | 25,000 | 20 | 20 | 15.4 | 98* |
| ASTM B148 Alloy 9C | 75,000 | 30,000 | 12 min. | 12 | 17 | 150 |
| (Weldable Grade) | 65,000 | 32,500 | 25 | – | 23 | 120-170 |
| ASTM A494 (Hastelloy B) | 72,000 | 46,000 | 6 | – | – | – |
| ASTM A494 (Hastelloy C) | 72,000 | 46,000 | 4 | – | – | – |
| Stellite No. 6 | 121,000 | 64,000 | 01.feb | – | 30.4 | – |
| ASTM B211 Alloy 20911-T3 | 44,000 | 36,000 | 15 | – | 10.2 | 95 |
| ASTM B16 1/2 Hard | 45,000 | 15,000 | 7 | 50 | 14 | – |
| ASTM B21 Alloy 464 | 60,000 | 27,000 | 22 | 55 | – | – |
| AISI 12L 14 | 79,000 | 71,000 | 16 | 52 | – | 163 |
| ASTM A108 Grade 1018 | 69,000 | 48,000 | 38 | 62 | – | 143 |
| (Suitable for ASTM A193 Grade B7 bolt material) | 135,000 | 115,000 | 22 | 63 | 29.9 | 255 |
| ASTM A276 Type 302 | 85,000 | 35,000 | 60 | 70 | 28 | 150 |
| ASTM A276 Type 304 | 85,000 | 35,000 | 60 | 70 | – | 149 |
| ASTM A276 Type 316 | 80,000 | 30,000 | 60 | 70 | 28 | 149 |
| ASTM A276 Type 316L | 81,000 | 34,000 | 55 | – | – | 146 |
| ASTM A276 Type 410 | 75,000 | 40,000 | 35 | 70 | 29 | 155 |
| ASTM A461 Grade 630 | 135,000 | 105,000 | 16 | 50 | 29 | 275-345 |
| Alloy K500 (K Monel) | 100,000 | 70,000 | 35 | – | 26 | 175-260 |
| ASTM B335 (Hastelloy B) | 100,000 | 46,000 | 30 | – | – | – |
| ASTM B336 (Hastelloy C) | 100,000 | 46,000 | 20 | – | – | – |
RECOMMENDED SERVICE (CAST VALVE MATERIALS)
The table shows the most common materials for cast valves and their recommended service:
| MATERIAL GROUP | MATERIAL GRADE | RECOMMENDED SERVICE |
|---|---|---|
| High-temperature Carbon Steel | ASTM A216 Grade WCB | Non-corrosive fluids as water, oil, and gases at temperatures range -20°F (-30°C) and +800°F (+425°C) |
| Low-temperature Carbon Steel | ASTM A352 Grade LCB | Low temperature to -50°F (-46°C). Use excluded above +650°F (+340°C). |
| Low-temperature Carbon Steel | ASTM A352 Grade LC1 | Low temperature to -75°F (-59°C). Use excluded above +650°F (+340°C). |
| Low-temperature Carbon Steel | ASTM A352 Grade LC2 | Low temperature to -100°F (-73°C). Use excluded above +650°F (+340°C). |
| 3.1/2% Nickel Steel | ASTM A352 Grade LC3 | Low temperature to -150°F (-101°C). Use excluded above +650°F (+340°C). |
| 1.1/4% Chrome 1/2% Moly Steel | ASTM A217 Grade WC6 | Non-corrosive fluids as water, oil, and gases at temperatures range -20°F (-30°C) and +1100°F (+593°C). |
| 2.1/4% Chrome | ASTM A217 Grade C9 | Non-corrosive fluids as water, oil and gases at temperatures range -20°F (-30°C) and +1100°F (+593°C). |
| 5% Chrome 1/2% Moly | ASTM A217 Grade C5 | Mild corrosive or erosive applications and non-corrosive applications at temperatures between -20°F (-30°C) and +1200°F (+649°C). |
| 9%Chrome 1% Moly | ASTM A217 Grade C12 | Mild corrosive or erosive applications and non-corrosive applications at temperatures between -20°F (-30°C) and +1200°F (+649°C). |
| 12% Chrome Steel | ASTM A487 Grade CA6NM | Corrosive application at temperatures between -20°F (-30°C) and +900°F (+482°C). |
| 12% Chrome | ASTM A217 Grade CA15 | Corrosive application at temperatures up to +1300°F (+704°C) |
| Stainless steel 316 | ASTM A351 Grade CF8M | Corrosive or either extremely low or high-temperature non-corrosive services between -450°F (-268°C) and +1200°F (+649°C). Above +800°F (+425°C) specify carbon content of 0.04% or greater. |
| Stainless steel 347 | ASTM 351 Grade CF8C | Mainly for high temperature, corrosive applications between -450°F (-268°C) and +1200°F (+649°C). Above +1000°F (+540°C) specify carbon content of 0.04% or greater. |
| Stainless steel 304 | ASTM A351 Grade CF8 | Corrosive or extremely high temperatures non-corrosive services between -450°F (-268°C) and +1200°F (+649°C). Above +800°F (+425°C) specify carbon content of 0.04% or greater. |
| Stainless steel 304L | ASTM A351 Grade CF3 | Corrosive or non-corrosive services to +800F (+425°C). |
| Stainless steel 316L | ASTM A351 Grade CF3M | Corrosive or non-corrosive services to +800F (+425°C). |
| Alloy-20 | ASTM A351 Grade CN7M | Good resistance to hot sulfuric acid to +800F (+425°C). |
| Monel | ASTM 743 Grade M3-35-1 | Weldable grade. Good resistance to corrosion by all common organic acids and salt water. Also highly resistant to most alkaline solutions to +750°F (+400°C). |
| Hastelloy B | ASTM A743 Grade N-12M | Well suited for handling hydrofluoric acid at all concentrations and temperatures. Good resistance to sulphuric and phosphoric acids to +1200°F (+649°C). |
| Hastelloy C | ASTM A743 Grade CW-12M | Good resistance to span oxidation conditions. Good properties at high temperatures. Good resistance to sulphuric and phosphoric acids to +1200°F (+649°C). |
| Inconel | ASTM A743 Grade CY-40 | Very good for high-temperature service. Good resistance to spangly corrosive media and atmosphere to +800°F (+425°C). |
| Bronze | ASTM B62 | Water, oil or gas: up to 400°F. Excellent for brine and seawater service. |