Introduction
CG12 is a stainless steel grade specified in ASTM A743 for general corrosion-resistant castings. Casting process options include Investment Casting, Shell Molding Casting and Sand Casting, subject to the applicable specification and component requirements.
| Field | Value |
|---|---|
| Designation | CG12 |
| Material Type | Stainless Steel |
| Sub Type | Austenitic Stainless Steel |
| Product Form | casting |
Manufacturing Process
Investment Casting
Shell Molding Casting
Sand Casting
Equivalent Grades
N/A
Similar Materials
N/A
Reference Standards
| Standard | Standard Title | Edition | Specification | Identifier |
|---|---|---|---|---|
| ASTM A743 | Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application | 03 | CG12 | UNS J93001 |
Related Casting Products
Physical Properties
N/A
Chemical Composition
| Element | ASTM A743Edition 03 |
|---|---|
| C | ≤ 0.12 % |
| Si | ≤ 2.00 % |
| Mn | ≤ 1.50 % |
| P | ≤ 0.04 % |
| S | ≤ 0.04 % |
| Cr | 20.0–23.0 % |
| Ni | 10.0–13.0 % |
Heat Treatment
ASTM A743–03 · Heat treatment
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | Heat | ≥ 1900 °F / ≥ 1040 °C[1] | — |
| 2 | Quench or rapid cool | — | water quench or rapid cooling by other means |
Notes
ASTM A743 · Edition 03
[1] Heat treatment: sufficient time to heat casting to temperature
Mechanical Properties
| Property | ASTM A743Edition 03 |
|---|---|
| Tensile Strength | ≥ 70 ksi[1] ≥ 485 MPa[1] |
| Yield Strength | ≥ 28 ksi[1] ≥ 195 MPa[1] |
| Elongation | ≥ 35 %[1] |
Notes
ASTM A743 · Edition 03
[1] Tensile Strength/Yield Strength/Elongation: Applies only when Supplementary Requirement S12 is specified; Condition: heat treatment per; separately cast keel block per S12.2 unless S12.3 agreement applies
Welding Conditions
N/A
Applications
Typical casting applications include cast components for water systems, offshore platforms and heat-exchanger equipment.
Last Updated: October 13, 2026