ASME SA-217 Grade WC6 Cast steels

Alternative designations: 1 1/4Cr-1/2Mo
Material group: Ferrous Alloys / Cast steels
Country/Standard: United States / ASME

Data updates

Latest Update: 2026-01
Total number of updates: 8
Update History

ASME SA-217 Grade WC6 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.05 – 0.20
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
1.00 – 1.50
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
≤ 0.50
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Cu+Ni+W
VALUE
val1
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UNIT
%
CAS NUMBER
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3
CRITERIA
W
VALUE
val1
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UNIT
%
CAS NUMBER
7440-33-7

ASME Boiler and Pressure Vessel Code An International Code Section II - Part A Ferrous Material Specifications / American Society of Mechanical Engineers / 2025

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ASME SA-217 Grade WC6 Physical Properties

Temperature

≤ 0°C
0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Modulus of Elasticity val1
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GPa Unlock full details
Coefficient of Thermal Expansion (CTE) 11.5 10-6/°C Unlock full details
Thermal Conductivity 41 W/(m∙°C) Unlock full details

This material has 307 properties — only a subset is shown here.

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ASME SA-217 Grade WC6 Heat Treatments

  • Furnished in the normalized and tempered condition. Tempered at 595°C (1110°F) minimum.<br />Heat treatment shall be performed after castings have been allowed to cool below the transformation range.<br />Minimum preheat temperature: 150°C (300°F) for all thicknesses.

ASME SA-217 Grade WC6 Mechanical Properties

Temperature

0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Yield Strength, Rp0.2 275 MPa Unlock full details
Tensile Strength 485 — 655 MPa Unlock full details
Elongation, A 20 % Unlock full details
Reduction of Area val1
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% Unlock full details

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  • 53 Cross References
  • 11 Composition
  • 39 Mechanical Properties
  • 80 Physical Properties
  • 1 Heat Treatment
  • - Metallography
  • - Machinability
  • 1 Stress-Strain
  • - Formability
  • - Fatigue
  • - Fracture
  • 64 Creep
  • - Joints
  • - Coatings
  • 13 Dimensions
  • - Tribology
  • - Corrosion
  • - Ageing
  • - Weatherability
  • - Irradiation
  • 45 Total Suppliers