CA15 Stainless Steel


CA15 stainless steel overview

CA15 stainless steel is known as one of the most commonly used martensitic steels. As it contains more than 11.5% chromium, its corrosion resistance is moderate. Martensitic stainless steel CA15 can be hardened by heat treatment and has a wide range of properties. CA15 stainless steel remains magnetic whether it is annealed or hardened. That being said, the ability for it to weld is similarly lessened. Its application is also limited by the working temperature, the strength is reduced when the working temperature is high, and the ductility is weakened when the working temperature is low. CA15 is suitable for applications requiring high strength but moderate corrosion and heat resistance.

The characteristics of stainless steel CA15

CA15 stainless steel has good tensile strength, creep strength, and fatigue strength, but has slight corrosion resistance. After annealing, it can be moderately stretched and formed and has relatively good cold workability. Heat treatments applicable to grade CA15 include annealing, hardening, quenching, tempering, and stress relieving. As martensitic steel, A217 CA15 is one of the most rugged stainless steel to weld.  Chemical balance gives stainless steel CA15 higher strength and hardness but lower ductility.

CA15 material composition

CA15 Chemical Composition

Carbon Silicon Manganese Phosphorus Sulfur Chromium Nickel Molybdenum
0.15% Max 1.50% Max 1.00% Max 0.04% Max 0.04% Max 11.50 - 14.00% 1.00% Max 0.50% Max

CA15 Physical Properties

Yield Strength Tensile Strength Elongation at 2 in Reduction of Area
65 ksi Min 90 ksi Min 18% Min 30% Min

Related standards

CA15 material equivalent

Inox 410、AISI 410、SUS 410、UNS S41000;Wrought Grade: ASTM/UNS 410; Wrought UNS: S41000;1.4011、1.4006.

Applications of CA15 Stainless Steel
Stainless Steel CA15 Applications:
1) Steam turbine
2) jet engine
3) Gas turbine
4) Steam valve
5) Tray valve
6) Pump shaft
7) Turbine blades
8) Bolt
9) Flat spring
10) Knife
11) Kitchen Utensils
12) Hand tools
13) Miscellaneous items


(1) Heat to 1750°F [955°C] minimum, air cool and temper at 1100°F [595°C] minimum, or

(2) Anneal at 1450°F [790°C] minimum