Call Us For a Quote: 800.523.4865
Request Information
This is a high carbon chromium stainless steel, capable of developing high hardness and mechanical properties by conventional heat treating methods. It exhibits best corrosion resistance in the hardened condition. It has excellent resistance to wear and abrasion and is magnetic in all conditions. It develops the highest hardness of the stainless steels.

UNS S44004

Color Marking: Ends painted Blue

Stock Lengths 10' to 12' and 20' to 22'

Max. Brinell 285
Unit of Measure

Specifications

Estimated Weight per Foot

 N/A 8.186 lb

Estimated Weight 12-Ft. Bar

 N/A 98.23 lb

Analysis

N/A Carbon .95/1.20
Manganese 1.00 Max.
Phosphorus .040 Max.
Sulphur .30 Max.
Si. 1.00 Max.
Cr.16.0/18.00
Mo. .65 Max.
Ni. .75 Max.0
Cu. .50 Max.

Specifications

N/A The following specifications are generally applicable:
AMS 5630, QQ-S-763, ASTM A 276, ASTM A 580

Applications

N/A Used for severe abrasion service such as in needle valves, balls and seats for check valves and ball bearings. Well adapted for pump parts which must resist corrosion encountered in the oil industry.

Corrosion Resistance

N/A Type 440C resists corrosion from fresh water steam, crude oil, gasoline, etc., and resists staining from fruit and food acids. Maximum resistance is obtained by hardening and polishing.

Resistance to Scaling

N/A Resists scaling up to 12Q0°F in continuous service.

Machinability

N/A Type 440C has fair machining characteristics, with a machinability rating of 40%, with 1212 rated as 100%. Surface cutting speed on automatic screw machines is approximately 65 feet per minute

Weldability

N/A Poor welding properties, due to high carbon content.

Forming

N/A This grade has poor forming and stamping properties.

Forging

N/A Forge between 1900° and 2100°F, not below 1650°F. Cool slowly.

Annealing

N/A Full annealing range is 1550°-1650°F. Cool slowly in furnace.

Hardening

N/A Hardening range is between 1850° and 1950°F. Quench large sections in oil. Small sections may be quenched in air. Temper as required.