CA6N Martensitic Stainless Steel Casting Material

Martensitic Stainless Steel

Download MDS PDF · Request a Quote

Introduction

CA6N is a martensitic stainless steel grade covered by ASTM A743. Typical family applications include impellers, pump casings and internal pump and valve parts.

FieldValue
DesignationCA6N
Material TypeStainless Steel
Sub TypeMartensitic Stainless Steel
Product Formcasting

Manufacturing Process

Investment Casting
Shell Molding Casting
Sand Casting

Equivalent Materials

N/A

Similar Materials

N/A

Reference Standards

StandardStandard TitleEditionSpecificationIdentifier
ASTM A743Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application03CA6N—

Physical Properties

N/A

Chemical Composition

ElementASTM A743Edition 03
C≤ 0.06 %
Si≤ 1.00 %
Mn≤ 0.50 %
P≤ 0.02 %
S≤ 0.02 %
Cr10.5–12.5 %
Ni6.0–8.0 %

Heat Treatment

ASTM A743–03 · Heating, reheating and aging

StepOperationTemperatureCooling
1Heat1900 °F / 1040 °C[1]—
2Air cool—air
3Reheat1500 °F / 815 °C[1]—
4Air cool—air
5Age800 °F / 425 °C[1]—

Notes

ASTM A743 · Edition 03

[1] Heating, reheating and aging: sufficient time to heat uniformly

Mechanical Properties

Core Mechanical Properties

ASTM A743 — 03 · Table S12.1 — Normative

PropertyValue
Tensile Strength≥ 140 ksi[1]
≥ 965 MPa[1]
Yield Strength≥ 135 ksi[1]
≥ 930 MPa[1]
Elongation≥ 15 %[1]
Reduction of Area≥ 50 %[1]

Notes

ASTM A743 · Edition 03

[1] Tensile Strength/Yield Strength/Elongation/Reduction of Area: 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

Martensitic stainless steel ASTM A743 Grade CA6N is typically used for gate-valve body castings for water and wastewater equipment. Other cast components used in this material family include impellers, pump casings and internal pump and valve parts. These castings are used in water-service pumping systems, industrial process equipment and power-generation facilities.

Need CA6N Castings?

Contact us for casting and machining inquiries.

Last Updated: November 6, 2026

error: Alert: Thanks for your interesting, but Article is protected ! You can click the Top Right email!