7MM T303 Stainless Round

$4.56$23.72

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Specifications

Metric bearing quality T303 stainless round bars are great for bearing shaft or metric applications. Also known as “free-machining” stainless, T303 has good non-seizing properties and is the most machinable of the chromium-nickel stainless grades. T303 has excellent corrosion resistance, but less than other grades such as T304 or T316. Its tensile strength and hardness can be increased by cold working. Slight magnetism can be detected by cold working.

Mechanical Properties

Ultimate Tensile Strength 85,000-95,000
Yield Strength 30,000-40,000
Brinell Hardness 50-60
Elongation 45-55
Machinability and Weldability
Machinability is rated at 78% of B1112. Average cutting speed 130 ft/min. 303 has only low to fair welding properties. 303 can be forged between 2100°-2350° F. Do not forge below 1700° F.
Tolerances
Precision Ground Tolerance
Bearing Quality -.0002/-.0004mm

Technical Specifications

ASTM A276, ASTM A479, AMS 5639

Chemistry

C.15
Mn2
Si1
Cr17-19
Ni8-10
Cu.75
Mo.75
Se.15-.4
P.15
S.15
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