321 Stainless Steel Bar

321 stainless steel bar, or else also known as UNS S32100 and Grade 321, is principally involved 17% to 19% chromium, 12% nickel, .25% to 1% silicon, 2% greatest manganese, clues of phosphorus and sulfur .70% titanium, with the equality being iron. With respect to erosion resistance, 321 is equal to Grade 304 in its tough condition and is unrivaled if the application includes administration in the 797° to 1652° F range.321 Grade joins high quality, imperviousness to scaling and stage security with imperviousness to consequent fluid erosio

Condition

H&T	Hardened and tempered.
ANN	Annealed
PH	Precipitation hardened.

321 Surface finish

CD	Cold drawn	P	Polished
BD	Bright drawn	SRE	Slit rolled edge
CG	Centreless ground	HF	Hot finished
CF	Cold finished	HRAP	Hot rolled annealed and pickled
P&T	Peeled and turned	RT	Rough turned/peeled
ST	Smooth turned	PR	Peeled and reeled

321 Round Bar Sizes

Type	SIZES (mm)	SIZES (Inches)	ISO Tolerance
Cold Drawn and Polish	3.00 – 75.00	1/8" – 3.00"	h8-h9-h10-h11
Cold Drawn and Ground	10.00 – 75.00	5/6" – 2.50"	h8-h9-h10-h11
Peeled and Polished	40.00 – 150.00	1.50" – 6.00"	h11, h11-DIN 1013
Peeled and Ground	20.00 – 50.00	3/4″ – 2.00"	h9-h10-h11

The key feature of 321 SS is its resistance to inter-granular corrosion. It contains titanium, which stabilizes against chromium carbide formation. 321 stainless steel material is also stronger than 304 stainless.

APPLICATIONS
Jet engine parts
Heat treated parts
Expansion joints
Turbo superchargers
Exhaust manifolds.

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