Valve Material Specifications (A216/351/352/105/182)

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 GRADECMnPSSiCuNiCrMoV
WCA UNS J025020.25(1)0.70(1)0.040.0450.600.300.500.500.201.00
WCB UNS J030020.30(2)1.00(2)0.040.0450.600.300.500.500.201.00
WCC UNS J025030.25(3)1.20(3)0.040.0450.600.300.500.500.201.00

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):

GRADECSiMnCrMoNiCuNbV
ASTM A352 LC30.150.60.653.5
ASTM A352 LCA0.250.60.70.50.20.50.30.03
ASTM A352 LCB0.30.610.50.20.50.30.03
ASTM A352 LCC0.250.61.20.50.20.50.03

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 GRADEUNSCMnSiSPCrNiMoNbVNCu
CF3+CF3AJ92700.031.520.040.0417.0-21.08.0-11.00.5
CF8+CF8AJ92600.081.520.040.0418.0-21.08.0-11.00.5
CF3M+CF3MAJ92800.031.51.50.040.0417.0-21.09.0-13.02.0-3.0
CF8MJ92900.081.51.50.040.0418.0-21.09.0-12.02.0-3.0
CF3MNJ928040.031.51.50.040.0417.0-21.09.0-13.02.0-3.00.10-.20
CF8CJ927100.081.520.040.0418.0-21.09.0-12.00.5-1
CF10J929500.04-0.101.520.040.0418.0-21.08.0-11.00.5
CF10MJ929010.04-0.101.51.50.040.0418.0-21.09.0-12.02.0-3.0
CH8J93400.081.51.50.040.0422.0-26.012.-15.00.5
CH10J934010.04-0.101.520.040.0422.0-26.012.-15.00.5
CH20J934020.04-0.201.520.040.0422.0-26.012.0-15.00.5
CK20J942020.04-0.201.51.750.040.0423.0-27.019.0-22.00.5
HK30J942030.25-0.351.51.750.040.0423.0-27.019.0-22.00.5
HK40J942040.35-0.451.51.750.040.0423.0-27.019.0-22.00.5
HT30N080300.25-0.3522.50.040.0413.0-17.033.0-37.00.5
CF10MC0.11.51.50.040.0415.0-18.013.0-16.01.7-2.25-2
CN7MN08070.071.51.50.040.0419.0-22.027.5-30.52.0-3.03.0-4.0
CN3MNJ946510.03210.010.0420.0-22.023.5-25.56.0-.00.18-.260.75
CE8MN0.0811.50.040.0422.5-25.58.0-11.03.0-.50.10-.30
CG-6MMNJ937900.064.0-6.010.030.0420.5-23.511.5-13.51.50-3.00.10-.300.10-.300.20-.40
  1. Grade CF8C shall have a Niobium content 8 times above the Carbon but not over 1.00%.
  2. 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 PropertiesModulusApproximate
ASTM CAST GRADE Tensile strength
(psi)
Yield strength
(psi min)
Elongation
(at 2 inches)
Reduction of Area (%)  
ASTM A216 Grade WCB70,00036,000223527.9137-1 87
ASTM A352 Grade LCB65,00035,000243527.9137-1 87
ASTM A217 Grade C590,00060,000183527.4241 Max.
ASTM A217 Grade WC165,00035,000243529.9215 Max.
ASTM A217 Grade WC670,00040,000203529.9215 Max.
ASTM A217 Grade WC970,00040,000203529.9241 Max.
ASTM A352 Grade LC365,00040,000243527.9137
ASTM A217 Grade C1290,00060,000183527.4180-240
ASTM A351 Grade CF-865,00028,0003528140
ASTM A351 Grade CF-8M70,00030,0003028.3156-170
ASTM A126 Class B31,000160-220
ASTM A126 Class C41,000160-220
ASTM A395 Type 60-45-1560,00045,0001523-26143-207
ASTM A439 Type D-2B58,00030,0007148-211
ASTM B6230,00014,000201713.555-65*
ASTM B143 Alloy 1A40,00018,00020201575-85*
ASTM B147 Alloy 8A65,00025,000202015.498*
ASTM B148 Alloy 9C75,00030,00012 min.1217150
(Weldable Grade)65,00032,5002523120-170
ASTM A494 (Hastelloy B)72,00046,0006
ASTM A494 (Hastelloy C)72,00046,0004
Stellite No. 6121,00064,00001.feb30.4
ASTM B211 Alloy 20911-T344,00036,0001510.295
ASTM B16 1/2 Hard45,00015,00075014
ASTM B21 Alloy 46460,00027,0002255
AISI 12L 1479,00071,0001652163
ASTM A108 Grade 101869,00048,0003862143
(Suitable for ASTM A193 Grade B7 bolt material)135,000115,000226329.9255
ASTM A276 Type 30285,00035,000607028150
ASTM A276 Type 30485,00035,0006070149
ASTM A276 Type 31680,00030,000607028149
ASTM A276 Type 316L81,00034,00055146
ASTM A276 Type 41075,00040,000357029155
ASTM A461 Grade 630135,000105,000165029275-345
Alloy K500 (K Monel)100,00070,0003526175-260
ASTM B335 (Hastelloy B)100,00046,00030
ASTM B336 (Hastelloy C)100,00046,00020

RECOMMENDED SERVICE (CAST VALVE MATERIALS)

The table shows the most common materials for cast valves and their recommended service:

MATERIAL GROUPMATERIAL GRADERECOMMENDED SERVICE
High-temperature Carbon SteelASTM A216 Grade WCBNon-corrosive fluids as water, oil, and gases at temperatures range -20°F (-30°C) and +800°F (+425°C)
Low-temperature Carbon SteelASTM A352 Grade LCBLow temperature to -50°F (-46°C). Use excluded above +650°F (+340°C).
Low-temperature Carbon SteelASTM A352 Grade LC1Low temperature to -75°F (-59°C). Use excluded above +650°F (+340°C).
Low-temperature Carbon SteelASTM A352 Grade LC2Low temperature to -100°F (-73°C). Use excluded above +650°F (+340°C).
3.1/2% Nickel SteelASTM A352 Grade LC3Low temperature to -150°F (-101°C). Use excluded above +650°F (+340°C).
1.1/4% Chrome 1/2% Moly SteelASTM A217 Grade WC6Non-corrosive fluids as water, oil, and gases at temperatures range -20°F (-30°C) and +1100°F (+593°C).
2.1/4% ChromeASTM A217 Grade C9Non-corrosive fluids as water, oil and gases at temperatures range -20°F (-30°C) and +1100°F (+593°C).
5% Chrome 1/2% MolyASTM A217 Grade C5Mild 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 C12Mild corrosive or erosive applications and non-corrosive applications at temperatures between -20°F (-30°C) and +1200°F (+649°C).
12% Chrome SteelASTM A487 Grade CA6NMCorrosive application at temperatures between -20°F (-30°C) and +900°F (+482°C).
12% ChromeASTM A217 Grade CA15Corrosive application at temperatures up to +1300°F (+704°C)
Stainless steel 316ASTM A351 Grade CF8MCorrosive 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 347ASTM 351 Grade CF8CMainly 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 304ASTM A351 Grade CF8Corrosive 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 304LASTM A351 Grade CF3Corrosive or non-corrosive services to +800F (+425°C).
Stainless steel 316LASTM A351 Grade CF3MCorrosive or non-corrosive services to +800F (+425°C).
Alloy-20ASTM A351 Grade CN7MGood resistance to hot sulfuric acid to +800F (+425°C).
MonelASTM 743 Grade M3-35-1Weldable 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 BASTM A743 Grade N-12MWell suited for handling hydrofluoric acid at all concentrations and temperatures. Good resistance to sulphuric and phosphoric acids to +1200°F (+649°C).
Hastelloy CASTM A743 Grade CW-12MGood resistance to span oxidation conditions. Good properties at high temperatures. Good resistance to sulphuric and phosphoric acids to +1200°F (+649°C).
InconelASTM A743 Grade CY-40Very good for high-temperature service. Good resistance to spangly corrosive media and atmosphere to +800°F (+425°C).
BronzeASTM B62Water, oil or gas: up to 400°F. Excellent for brine and seawater service.

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