CT15C Austenitic Stainless Steel Casting Material
Austenitic Stainless Steel
Introduction
CT15C is an austenitic stainless steel grade covered by ASTM A351. Typical family applications include pump casings, impellers and covers.
| Field | Value |
|---|---|
| Designation | CT15C |
| Material Type | Stainless Steel |
| Sub Type | Austenitic Stainless Steel |
| Product Form | casting |
Manufacturing Process
Investment Casting
Shell Molding Casting
Sand Casting
Equivalent Materials
| Standard | Material Grade |
|---|---|
| EN 10213 EN 10295 | GX10NiCrSiNb32-20 |
Similar Materials
N/A
Reference Standards
| Standard | Standard Title | Edition | Specification | Identifier |
|---|---|---|---|---|
| ASTM A351 | Standard Specification for Castings, Austenitic, Austenitic-Ferritic (Duplex), for Pressure-Containing Parts | 03 | CT15C | UNS N08151 |
Related Casting Products
Physical Properties
N/A
Chemical Composition
| Element | ASTM A351Edition 03 |
|---|---|
| C | 0.05–0.15 % |
| Si | 0.50–1.50 % |
| Mn | 0.15–1.50 % |
| P | ≤ 0.03 % |
| S | ≤ 0.03 % |
| Cr | 19.0–21.0 % |
| Ni | 31.0–34.0 % |
| Nb | 0.50–1.50 % |
Heat Treatment
ASTM A351–03
N/A
Mechanical Properties
Core Mechanical Properties
ASTM A351 — 03 · Table 3 — Normative
| Property | as-cast |
|---|---|
| Tensile Strength | ≥ 63 ksi ≥ 435 MPa |
| Yield Strength (Rp0.2) | ≥ 25 ksi ≥ 170 MPa |
| Elongation | ≥ 20.0 % |
Welding Conditions
N/A
Applications
Austenitic stainless steel ASTM A351 Grade CT15C is typically used for pressure-containing cast components such as valve bodies, flanges and fittings, subject to grade-specific service requirements. Other cast components used in this material family include pump casings, impellers and covers. Typical settings include chemical and pharmaceutical processing, pulp-and-paper plants and selected water-handling systems.
Suitability for a particular acid, concentration or temperature remains grade- and process-specific.
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Email Us for a QuoteLast Updated: November 6, 2026