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All Categories > Aluminum and Stainless Bars, Tubes, Pipes and Plates > Stainless Steel > Cold Finished Stainless Steel > 440C - Cold Finished Stainless Steel > Types 440C Annealed and Cold Drawn Stainless Steel - Rounds > Size 13/32  
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Size 13/32, Types 440C Annealed and Cold Drawn Stainless Steel - Rounds



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





Specifications  · Analysis  · Specifications  · Applications  · Corrosion Resistance  · Resistance to Scaling  · Machinability  · Weldability  · Forming  · Forging  · Annealing  · Hardening

Specifications

Estimated Weight per Foot

.4412 lb

Estimated Weight 12-Ft. Bar

5.294 lb


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



Applications
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
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
Resists scaling up to 12Q0°F in continuous service.



Machinability
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
Poor welding properties, due to high carbon content.



Forming
This grade has poor forming and stamping properties.



Forging
Forge between 1900° and 2100°F, not below 1650°F. Cool slowly.



Annealing
Full annealing range is 1550°-1650°F. Cool slowly in furnace.



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




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