STAINLESS STEEL

Some common grades listed below

Grade UNS Uses
203EZ S20300 Austenitic, non-magnetic. Excellent machining. Good corrosion resistance
303 S30300 Austenitic, non-magnetic. Free machining, good corrosion resistance
304 S30400 Austenitic, non-magnetic. Good machinability, good corrosion resistance
304L S30403 Austenitic, non-magnetic. Low carbon with good machinability and corrosion resistance
316 S31600 Austenitic, non-magnetic. Good/great corrosion resistance, lower machinability
316L S31603 Austenitic, non-magnetic. Low carbon with good/great corrosion resistance, lower machinability
410 S41000 Martensitic, magnetic, hardenable. Some corrosion resistance. Fair machinability.
416 S41600 Martensitic, magnetic, hardenable. Good machinability and good corrosion resistance.
440C S44004 Martensitic, magnetic, hardenable. High carbon for max hardness. Good corrosion resistance. Fair machinability.
430 S43000 Ferritic, magnetic, non-hardenable. Good corrosion resistance and strength with fair machinability.

Hot roll tolerances

Stainless steel, rounds and squares

Specified size

Permissible variation from specified size

Over Under
> 5/16 to 7/16, incl. .006 .006
> 7/16 to 5/8, incl. .007 .007
> 5/8 to 7/8, incl. .008 .008
> 7/8 to 1, incl. .009 .009
> 1 to 1 1/8, incl. .010 .010
> 1 1/8 to 1 1/4, incl. .011 .011
> 1 1/4 to 1 3/8, incl. .012 .012
> 1 3/8 to 1 1/2, incl. .014 .014
> 1 1/2 to 2, incl. 1/64 1/64
> 2 to 2 1/2, incl. 1/32 0
> 2 1/2 to 3 1/2, incl. 3/64 0
> 3 1/2 to 4 1/2, incl. 1/16 0
> 4 1/2 to 5 1/2, incl. 5/64 0
> 5 1/2 to 6 1/2, incl. 1/8 0
> 6 1/2 to 8, incl. 5/32 0
> 8 to 12, incl. 3/16 0

 

Permissible Variations in Thickness and Width for Hot Rolled Flat Bars

Specified Width

Permissible Variations in Thickness for Thickness Given

Permissible Variations in Width

1/8 to 1/2" > 1/2 to 1" > 1 to 2" > 2 to 4" > 4 to 6" > 6 to 8"

Over

Under

Over Under Over Under Over Under Over Under Over Under Over Under
to 1", incl. .008 .008 .010 .010 ..... ..... ..... ..... ..... ..... ..... ..... .015 .015
> 1 to 2" .012 .012 .015 .015 .031 .031 ..... ..... ..... ..... ..... ..... .031 .031
> 2 to 4" .015 .015 .020 .020 .031 .031 .062 .031 ..... ..... ..... ..... .062 .031
> 4 to 6" .015 .015 .020 .020 .031 .031 .062 .031 .093 .062 ..... ..... .093 .062
> 6 to 8" .016 .016 .025 .025 .031 .031 .062 .031 .093 .062 .125 .156 .125 .156
> 8 to 10" .021 .021 .031 .031 .031 .031 .062 .031 .093 .062 .125 .156 .156 .187

 

Permissible Variations in Size of Cold Finished Round Bars

Specified size

Permissible Variations from Specified Size

Over Under
> 1/2" to 1" .002 .002
> 1" to 1 1/2" .0025 .0025
> 1 1/2" to 4" .003 .003

 

 Permissible Variations in Size of Cold Finished Hexagonal, Octagonal and Square Bars

Specified size

Permissible Variations from Specified Size

Over Under
> 1/2" to 1" 0 .004
> 1" to 2" 0 .006
> 2" to 3" 0 .008
> 3" 0 .010

 

Permissible Variations in Width of Cold Finished Flat Bars

Width

Permissible Variations in Width

Thickness 1/4" and under Thickness over 1/4"
> 3/8" to 1" .004 .004
> 1" to 2" .006 .004
> 2" to 3" .008 .004
> 3" to 4 1/2" .010 .005

 

Permissible Variations in Thickness of Cold Finished Flat Bars

Thickness

Permissible Variations in Thickness, over and under

> 1/8" to 1" .002
> 1" to 2" .003
> 2" to 3" .004
> 3" to 4 1/2" .005

 

All information presented per ASTM A484

 

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