Stainless Steel Alloys

ALLOY / UNS DESCRIPTION C MAX NI CR MN OTHER DENSITY
Austenitic
201
UNS S20100

Chromium nickel manganese steel was developed as a satisfactory alternative for Type 301 for many applications.

.15 3.5-5.5 16.0-18.0 16.0-18.0

P .06 Max

S .03 Max

N .025

Si 1.0 Max

.28
201LN
S20153

An austenitic stainless steel developed for transportation, cryogenic containment.

.03 4.0-5.0 16-17.5 6.40-7.50

P .045 Max
S .015 Max
Si .75 Max
N .10/.25
Cu 1.0 Max

.28
254 SMO
S31254

Highly resistant to crevice corrosion, pitting and chloride stress. Used in chemical, salt water, scrubbers and pulp/paper industry.

.020 17.5-18.5 19.5-20.5 1.0 Max

P .030 Max
S .010 Max
Cu .50-1.0
N .18-.22

.287
ALLOY / UNS DESCRIPTION C MAX NI CR MN OTHER DENSITY
301
S30100

Chromium nickel steel capable of attaining high tensile strength and ductility by moderate or severe cold working.

0.15 6.0-8.0 16.0-18.0 18.0 2.0 Max

P .045 Max

S .03 Max

Si 1.0 Max

0.29
301LN
S30153

301LN is a higher nitrogen content version of 301L to compensate for the lower carbon.

0.03 6.0-8.0 16.5-18.5 2.0 Max

P .045 Max
S .03 Max
S 1.0 Max

0.29
303
S30300

Free machining grade (sulfur added) with good machinability, corrosion resistance and strength.

0.15 8.0-10.0 17.0-19.0 2.0 Max

P .20 Max
Si 1.0 Max
S .15 Min

0.282
304
S30400

Low carbon chromium nickel stainless and heat resisting steel somewhat superior to Type 302 in corrosion resistance.

0.08 8.0-10.5 18.0-20.0 2.0 Max

P .045 Max
S .03 Max
Si 1.0 Max

0.29
304H
S30409

Controlled carbon grade of 304 for increased strength at operating temperatures above 800 degrees Fahrenheit.

.04-1.0 8.0-10.5 18.0-20.0 2.0 Max

P .04 Max
Si 1.0 Max
S .03 Max

.285
304L
S30403

Very low carbon chromium nickel steel with general corrosion resistance similar to Type 304 but with superior resistance to intergranular corrosion following welding or stress relieving.

.03 8.0-12.0 18.0-20.0 2.0 Max

P .045 Max
S .03 Max
Si 1.0 Max

.29
309
S30900

High corrosion-resistant, chromium nickel grade with carbon limited to .08

.08 12.0-15.0 22.0-24.0 2.0 Max

P .045 Max
S .03 Max
Si 1.0 Max

.29
309S
S30908

Controlled carbon version of 309. 309S maintains corrosion resistance at higher operating temperatures.

.08 12.0-15.0 22.0-24.0 2.0 Max

P .045 Max
Si 1.0 Max
S .03 Max

.29
310
S31000

Similar to 309 with higher resistance to corrosion and oxidation at elevated temperatures.

.25 19.0-22.0 24.0-26.0 2.0 Max

P .045 Max
S .03 Max
Si 1.50 Max

.29
310S
S31008

Maintains good strength and corrosion resistance at higher operating temperatures.

.08 19.0-22 24.00-26.00 2.0 Max

P .045 Max
S .030 Max
Si 1.50 Max

.29
316
S31600

Chromium nickel stainless and heat resisting steel with superior corrosion resistance to other chromium nickel steels when exposed to many types of chemical corrodents; superior creep strength at elevated temperatures.

.08 10.0-14.0 16.0-18.0 2.0 Max

P .045 Max
S .03 Max
Si 1.0 Max
Mo 2.0-3.0

.29
316L
S31603

Low carbon chromium nickel stainless steel with general corrosion resistance similar to Type 316 but with superior resistance to intergranular corrosion following welding or relieving. It is recommended for use in parts which are fabricated by welding and cannot be subsequently annealed.

.03 10.0-14.0 16.0-18.0 2.0 Max

P .045 Max
S .03 Max
Si 1.0 Max
Mo 2.0-3.0

.29
321
S32100

Chromium nickel steel containing titanium. Recommended for parts fabricated by welding which cannot be subsequently annealed. Also recommended for parts to be used at temperatures between 800°F and 1850°F.

.08 9.0-12.0 17.0-19.0 2.0 Max

P .045 Max
S .03 Max
Si 1.0 Max
Ti 5xC Min

.29
ALLOY / UNS DESCRIPTION C MAX NI CR MN OTHER DENSITY
Ferritic
409
S40900

Corrosion resistant at elevated temperatures. Fair strength properties and formability while maintaining reasonable cost. Many auto applications.

0.08 10.5-11.75 0.5 Max

P .045 Max
Si 1.0 Max
S .045 Max

0.278
410
S41000

General purpose corrosion and heat resisting chromium steel. Good corrosion resistance and fair machining properties. Can be treated to RC35/45.

0.15 11.5-13.5 1.0 Max

P .04 Max
S 1.0 Max
Si 1.0 Max

0.28
410S
S41008

Alloy 410S is a low carbon, non-hardening modification of Alloy 410.

0.08 0.60 Max 11.5-14.5 1.0 Max

P .040 Max
Si .040 Max
S .030 Max

0.28
Martenisitic
430
S43000

General purpose grade, corrosion-resistant, straight chromium grade, non heat-treatable.

0.12 16.0-18.0 1.0 Max

P.04 Max
S .03 Max
Si 1.0 Max

0.28
439
S43035

Designed with added titanium for applications where chloride stress is an issue.

0.04 0.50 Max 17.0-18.0 1.0 Max

Si .60 Max
Ti .20- .60

0.278
ALLOY / UNS DESCRIPTION C MAX NI CR MN OTHER DENSITY
2205
S32205

A nitrogen, molybdenum enhanced austenitic-ferritic duplex stainless steel with general corrosion resistance similar to 904L, but with a yield strength nearly double that of austenitic.

0.03 4.5-6.5 22.0-23-0 0.28
ALLOY / UNS DESCRIPTION C MAX NI CR MN OTHER DENSITY
17-4PH
S17400

Precipitation hardening stainless steel with high strength and good corrosion resistance to 600°F. Used in aerospace, chemical, petrochemical, paper and metalworking industries.

.07 3.0-5.0 15.0-17.5 17.5 1.0 Max

P .04 Max
Si 1.0 Max
Cu 3.0-5.0

.28

Located strategically in both Ontario and Québec, our facilities boast over 150,000 square feet of warehouse and production space, proudly serving manufacturers in both Canada and the United States.

LEARN MORE
Fast Turnaround & Delivery

Fast Turnaround & Delivery

Metallurgists and Product Specialists on Staff

Metallurgists and Product Specialists on Staff

Serving Canada and the US Metal Needs

Serving Canada and the US Metal Needs