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ASTM A217 Castings for High-Temperature Service

Hebei Metals supplies ASTM A217 castings in the product form of valves, flanges, fittings and other pressure-containing parts. ASTM A217/A217M covers one grade of martensitic stainless steel and nine grades of ferritic alloy steel which are primarily utilized in high-temperature and corrosive service. It includes C-Mo alloy steel: Grade WC1; Ni-Cr-Mo alloy steel: Grade WC4, WC5; Cr-Mo alloy steel: Grade WC6, WC9, WC11, C5, C12; Cr-Mo-V alloy steel: Grade C12A; and Chromium Steel: Grade CA15.

Gate Valves with ASTM A217 WC6 body

Gate valves, 10″ 1500# RF, body: ASTM A217 WC6, Trim 5.

1. Chemical Composition Requirements

Chemical Composition of ASTM A217 Castings, %
GradeUNSCMnPSSiCrMoOthers
WC1J12524≤0.250.50-0.80≤0.04≤0.045≤0.60-0.45-0.65*A
WC4J120820.05-0.200.50-0.80≤0.04≤0.045≤0.600.50-0.800.45-0.65*B
WC5J220000.05-0.200.40-0.70≤0.04≤0.045≤0.600.50-0.900.90-1.20*C
WC6J120720.05-0.200.50-0.80≤0.035≤0.035≤0.601.00-1.500.45-0.65*D
WC9J218900.05-0.180.40-0.70≤0.035≤0.035≤0.602.00-2.750.90-1.20*E
WC11J118720.15-0.210.50-0.80≤0.020≤0.0150.30-0.601.00-1.500.45-0.65*F
C5J42045≤0.200.40-0.70≤0.04≤0.045≤0.754.00-6.500.45-0.65*G
C12J82090≤0.200.35-0.65≤0.035≤0.035≤1.008.00-10.000.90-1.20*H
C12AJ840900.08-0.120.30-0.60≤0.025≤0.0100.20-0.508.0-9.50.85-1.05*H
CA15J91150≤0.15≤1.00≤0.040≤0.025≤1.5011.5-14.0≤0.50*I

*All values are maximum unless otherwise specified.
*A – Total Residual{Cu:≤0.50,Ni:≤0.50,Cr≤0.35,W≤0.10}:≤1.00. *B – Ni:0.70-1.10,Total Residual{Cu:≤0.50,W≤0.10}:≤0.60.
*C – Ni:0.60-1.00,Total Residual{Cu:≤0.50,W≤0.10}:≤0.60. *D – Total Residual{Cu:≤0.50,Ni:≤0.50,W≤0.10}:≤1.00.
*E – Total Residual{Cu:≤0.50,Ni:≤0.50,W≤0.10}:≤1.00. *F – Total Residual{Al:≤0.01,Cu:≤0.35,Ni:≤0.50,V≤0.03}:≤1.00.
*G – Total Residual{Cu:≤0.50,Ni:≤0.50,W≤0.10}:≤1.00. *H – Total Residual{Cu:≤0.50,Ni:≤0.50,W≤0.10}:≤1.00.
*I – Ni:≤0.40,Co:0.06-0.10,N:0.03-0.07,V:0.18-0.25,Total Residual{Al:≤0.02,Ti≤0.01,Zr≤0.01}. *J – Ni:≤1.00.
*Values from *A to *J shall be furnished with the unit “%”.

2. Mechanical Properties

Mechanical Properties of ASTM A217 Castings
GradeTensile Strength, ksi[MPa]Yield Strength, min. ksi[MPa]Elongation in 2", min. %Reduction of Area, min. %
WC165[450]-90[620]35[240]2435
WC470[485]-95[655]40[275]2035
WC570[485]-95[655]40[275]2035
WC670[485]-95[655]40[275]2035
WC970[485]-95[655]40[275]2035
WC1180[550]-105[725]50[345]1845
C590[620]-115[795]60[415]1835
C1290[620]-115[795]60[415]1835
C12A85[585]-110[760]60[415]1845
CA1590[620]-115[795]60[415]1830
ASTM A217 WC9 valve body

ASTM A217 WC9 valve body for gate valve 14″ 1500#.

3. Heat Treatment

  1. All castings shall receive a heat treatment proper to their design and chemical composition.
  2. ASTM A217 castings shall be furnished in the normalized and tempered conditions; Grades WC1, WC4, WC5, WC6, and CA15 shall be tempered at 1100°F [595°C] min; Grades WC9, C5, C12, and WC11 shall be tempered at 1250°F [675°C] min; Grade C12A shall be thermally treated, either by normalizingand-tempering or by accelerated cooling from the austenitizing temperature by air blasting or liquid quenching, followed by tempering. C12A castings shall be austenitized at 1900-1975°F [1040-1080°C] and tempered at 1350-1470°F [730-800°C].
  3. Heat treatment shall be performed after castings have been allowed to cool below the transformation range.

4. Quality Control

  1. The surface of ASTM A217 castings (either valve, flange, fittings or other piping component) shall be visually examined and shall be free of sand, scale, cracks, and hot tears.
  2. Hollow castings of Grade C12A, larger than NPS 4 [DN 100], and whose internal surfaces are not accessible to the visual examination above-mentioned, shall be examined by the ultrasonic examination prescribed in Supplementary Requirement S7.
The ultrasonic inspection performed on ASTM A217 WC11 valve body.

The ultrasonic inspection performed on ASTM A217 WC11 valve body.

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Cr-Mo Alloy Steels

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    Hebei Metals Industrial Limited
    (Shijiazhuang Metalsin Pipeline Tech Co., Ltd)
    No. 176, Zhonghua South Street, Shijiazhuang, China.
    Tel: +86-311-89642206
    Fax:+86-311-67906676
    Web: www.metalspiping.com
    Email: sales@metalspiping.com