Type 410

• Martensitic stainless steel that provides good corrosion resistance plus high strength and hardness
• Magnetic in both the annealed and hardened conditions
• A wide range of properties can be developed with different heat treatments

Available Forms

Types 410 stainless steel is available in:

• Sheet
• Strip
• Bar (supplied annealed or hardened to specified hardness ranges)
• Wire (supplied annealed or hardened to specified hardness ranges)
• Forging Billets

Specifications

The following specifications are generally applicable:

Sheets and Plates

• AMS 5504
• QQ-S-766
• ASTM A 176
• ASTM A 240

Bars

• AMS 5613
• QQ-S-763
• ASTM A 276
• ASTM A 479

Typical Applications

• Used for applications requiring moderate corrosion resistance and high mechanical properties
• Applications include valve and pump parts, bolts and other fasteners, heat control shafts, flat springs, knives and table flatware, gage parts, hand tools, screens, spindles and mining machinery

Machinability

Type 410 has fair machinability. It has somewhat better machining characteristics than austenitic stainless steels, having a rating of about 55% compared to Bessemer screw stock (AISI B 1112). Sulfurized cutting oils are used for most operations.

Weldability

Type 410 has good weldability. It is readily joined by fusion and resistance welding methods. Type 410 filler rod should be used for weldments that will be annealed or hardened and tempered after welding. Type 309 or 310 filler rod should be used to obtain maximum weld metal ductility in the as-welded condition. Ductility of fusion welds can be improved by annealing at 1450-1500° F and slow cooling.

Formability

Type 410 has reasonably good cold working properties and can be moderately drawn and formed. Severe working should be done hot with bars at 1350-1500° F.

Corrosion Resistance

Type 410 provides a good corrosion resistance to air, water and some chemicals. Its resistance to nitric acid, concentrated sulfuric acid, dilute acetic acid and naphtha is satisfactory.  It also provides good resistance to food acids.

Forgeability

Type 410 can be readily forged at 2300° F. Preheat steel to 1800° F for 2 hours, raise rapidly to 2300° F, soak for 4 to 6 hours, forge, slow cool.

Heat Treating

ANNEALING: Heat slowly to 1550-1650° F cool to 1100° F in furnace, air cool.
PROCESS ANNEALING: Heat to 1350-1450° F, air cool.
HARDENING: Heat to 1700-1800° F, oil quench.  Follow by stress-relief or temper.
TEMPERING: Heat to 1100-1400°F for 1 to 4 hours, air cool.