CF3MN Austenitic Stainless Steel Casting Material
Austenitic Stainless Steel
Introduction
CF3MN is an austenitic stainless steel grade covered by ASTM A351, ASTM A743. Typical applications include pump and valve castings in chemical-processing and food-production equipment.
| Field | Value |
|---|---|
| Designation | CF3MN |
| Material Type | Stainless Steel |
| Sub Type | Austenitic Stainless Steel |
| Product Form | casting |
Manufacturing Process
Investment Casting
Shell Molding Casting
Sand Casting
Equivalent Materials
N/A
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 | CF3MN | UNS J92804 |
| ASTM A743 | Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application | 03 | CF3MN | UNS J92804 |
Related Casting Products
Physical Properties
N/A
Chemical Composition
| Element | ASTM A351Edition 03 | ASTM A743Edition 03 |
|---|---|---|
| C | ≤ 0.03 % | ≤ 0.03 % |
| Si | ≤ 1.50 % | ≤ 1.50 % |
| Mn | ≤ 1.50 % | ≤ 1.50 % |
| P | ≤ 0.040 % | ≤ 0.040 % |
| S | ≤ 0.040 % | ≤ 0.040 % |
| Cr | 17.0–21.0 % | 17.0–22.0 % |
| Ni | 9.0–13.0 % | 9.0–13.0 % |
| Mo | 2.0–3.0 % | 2.0–3.0 % |
| N | 0.10–0.20 % | 0.10–0.20 % |
Heat Treatment
ASTM A351–03 · Heat treatment
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | Heat treat | ≥ 1900 °F / ≥ 1040 °C | — |
| 2 | Quench or rapid cool | — | water quench or rapid cooling by other means |
ASTM A743–03
The casting may be supplied as cast only if corrosion resistance is acceptable.
ASTM A743–03 · Heat treatment and rapid cooling
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | Heat | ≥ 1900 °F / ≥ 1040 °C[1] | — |
| 2 | Cool rapidly | — | rapid; medium not specified |
Notes
ASTM A743 · Edition 03
[1] Heat treatment, Heat treatment and rapid cooling: sufficient time to heat casting to temperature
Mechanical Properties
Core Mechanical Properties
ASTM A351 — 03 · Table 3 — Normative
| Property | heat treated |
|---|---|
| Tensile Strength | ≥ 75 ksi ≥ 515 MPa |
| Yield Strength (Rp0.2) | ≥ 37 ksi ≥ 255 MPa |
| Elongation | ≥ 35.0 % |
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
CF3MN is used for pump and valve castings in chemical-processing and food-production equipment. Other cast components used in this material family include pump casings, impellers, valve bodies, covers and pipe fittings. Typical settings include chemical and pharmaceutical plants, food and beverage machinery, and filling, mixing and liquid-handling systems.
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Email Us for a QuoteLast Updated: November 6, 2026