Chapter 13      Wrought Stainless Steels

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 CHEMICAL COMPOSITION WROUGHT AUSTENITIC STAINLESS STEELSa

 Typec UNS C Mn Si Cr Ni Other
 201 S20100 0.15 5.5-7.5 1.00 16.0-18.0 3.5-5.5 0.25 N
 202 S20200 0.15 7.5-10.0 1.00 17.0-19.0 4.0-6.0 0.25 N
 205 S20500 0.12-0.25 14.0-15.5 1.00 16.5-18.0 1.0-1.75 0.32-0.40 N
 Nitronic 50 S20910 0.06 4.0-6.0 1.00 20.5-23.5 11.5-13.5 1.5-3.0 Mo; 0.20-0.40 N;
 (XM-19) 0.10-0.30 Nb; 0.10-0.30 V
 Nitronic 60 S21800 0.10 7.0-9.0 3.5-4.5 16.0-18.0 8.0-9.0 0.08-0.18 N
 Nitronic 40 S21900 0.08 8.0-10.0 1.00 19.0-21.5 5.5-7.5 0.15-0.40 N
 (XM-10)
 Nitronic 33 S24000 0.08 11.50-14.50 1.00 17.00-19.00 2.50-3.75 0.20-0.40 N
 (18-3-Mn)
 Nitronic 32 S24100 0.15 11.00-14.00 1.00 6.50-19.50 0.50-2.50 0.20-0.45 N
 (18-2-Mn)              
 18-18 Plus S28200 0.15 17.0-19.0 1.00 17.5-19.5 --- 0.5-1.5 Mo; 0.5-1.5 Cu;
0.40-0.60 N
 301 S30100 0.15 2.00 1.00 16.0-18.0 6.0-8.0 ---
 302 S30200 0.15 2.00 1.00 17.0-19.0 8.0-10.0 ---
 302B S30215 0.15 2.00 2.0-3.0 7.0-19.0 8.0-10.0 ---
 303b S30300 0.15 2.00 1.00 17.0-19.0 8.0-10.0 0.60 Mo (b)
 303Se S30323 0.15 2.00 1.00 17.0-19.0 8.0-10.0 0.15 min Se
 304 S30400 0.08 2.00 1.00 18.0-20.0 8.0-10.5 ---
 304H S30409 0.04-0.10 2.00 1.00 18.0-20.0 8.0-10.5 ---

 304L

S30403

0.03

2.00

1.00

18.0-20.0

8.0-12.0

---

 304HN

S30452

0.04-0.10

2.00

1.00

18.0-20.0

8.0-10.5

0.16-0.30 N

 (XM-21)

 

 

 

 

 

 

 

 304LN S30453 0.03 2.00 1.00 18.0-20.0 8.0-12.0 0.10-0.16 N
 302Cu S30430 0.08 2.00 1.00 17.0-19.0 8.0-10.0 3.0-4.0 Cu
 Typec UNS C Mn Si Cr Ni Other
 304N S30451 0.08 2.00 1.00 18.0-20.0 8.0-10.5 0.10-0.16 N
 305 S30500 0.12 2.00 1.00 17.0-19.0 10.5-13.0 ---
 Cronifer S30600 0.018 2.00 3.7-4. 17.0-18.5 14.5-15.5 0.20 Mo
 1815LCSi
 308 S30800 0.08 2.00 1.00 19.0-21.0 10.0-12.0 ---
 309 S30900 0.20 2.00 1.00 22.0-24.0 12.5-15.0 ---
 309S S30908 0.08 2.00 1.00 22.0-24.0 12.0-15.0 ---
 310 S31000 0.25 2.00 1.50 24.0-26.0 19.0-22.0 ---
 310S S31008 0.08 2.00 1.50 0.08 2.00 1.50 24.0-26.0 19.0-22.0 10 X %C min to
    1.10 max Nb + Ta
 254 SMO S31254 0.02 1.00 0.80 19.5-20.5 17.5-18.5 6.00-6.50 Mo; 0.50-1.00 Cu;
  0.10-0.22 N
 314 S31400 0.25 2.00 1.50-3.00 23.0-26.0 19.0-22.0 ---
 316 S31600 0.08 2.00 1.00 16.0-18.0 10.0-14.0 2.0-3.0 Mo
 316Fb S31620 0.08 2.00 1.00 16.0-18.0 10.0-14.0 1.75-2.50 Mo
 316H S31609 0.04-0.10 2.00 1.00 16.0-18.0 10.0-14.0 2.0-3.0 Mo
 316L S31603 0.03 2.00 1.00 16.0-18.0 10.0-14.0 2.0-3.0 Mo
 316Ti S31635 0.08 2.00 1.00 16.0-18.0 10.0-14.0 5 x %(C + N) min to 0.70 max Ti;
  2.0-3.0 Mo; 0.10 N
 316Cb S31640 0.08 2.00 1.00 16.0-18.0 10.0-14.0 10 x %C min to 1.10 max Nb + Ta;
  2.0-3.0 Mo;0.10 N
 316LN S31653 0.03 2.00 1.00 16.0-18.0 10.0-14.0 2.0-3.0 Mo; 0.10-0.16 N
 316N S31651 0.08 2.00 1.00 16.0-18.0 10.0-14.0 2.0-3.0 Mo; 0.10-0.16 N
 317 S31700 0.08 2.00 1.00 18.0-20.0 11.0-15.0 3.0-4.0 Mo
 317L S31703 0.03 2.00 1.00 18.0-20.0 11.0-15.0 3.0-4.0 Mo
 Typec UNS C Mn Si Cr Ni Other
 317LN S31753 0.03 2.00 1.00 18.0-20.0 11.0-15.0 0.10-0.22 N
 317LMN S31726 0.030 2.00 0.75 17.0-20.0 13.5-17.5 4.0-5.0 Mo; 0.10-0.20 N
 321 S32100 0.08 2.00 1.00 17.0-19.0 9.0-12.0 5 x %C min Ti
 321H S32109 0.04-0.10 2.00 1.00 17.0-19.0 9.0-12.0 5 x %C min Ti
 330 N08330 0.08 2.00 0.75-1.50 17.0-20.0 34.0-37.0 ---
 347 S34700 0.08 2.00 1.00 17.0-19.0 9.0-13.0 10 x %C min Nb
 347H S34709 0.04-0.10 2.00 1.00 17.0-19.0 9.0-13.0 8 x %C min - 1.0 max Nb
 348 S34800 0.08 2.00 1.00 17.0-19.0 9.0-13.0 0.2 Co; 10 x %C min Nb; 0.10 Ta
 348H S34809 0.04-0.10 2.00 1.00 17.0-19.0 9.0-13.0 0.2 Co; 8 x %C min - 1.0 max Nb;
0.10 Ta
 384 S38400 0.08 2.00 1.00 15.0-17.0 17.0-19.0 ---
 20Cb-3 N08020 0.07 2.00 1.00 19.0-21.0 32.0-38.0 2.0-3.0 Mo; 3.0-4.0 Cu;
8 x %C min to 1.00 max Nb
 20Mo-4 N08024 0.03 1.00 0.50 22.5-25.0 35.0-40.0 3.50-5.00 Mo; 0.50-1.50 Cu;
              0.15-0.35 Nb
 20Mo-6 N08026 0.03 1.00 0.50 22.0-26.0 33.0-37.2 5.00-6.70 Mo; 2.00-4.00 Cu
 Sanicro 28 N08028 0.02 2.00 1.00 26.0-28.0 29.5-32.5 3.0-4.0 Mo; 2.00-4.00 Cu
 AL-6X N08366 0.035 2.00 1.00 20.0-22.0 23.5-25.5 6.0-7.0 Mo
 AL-6XN N08367 0.030 2.00 1.00 20.0-22.0 23.5-25.5 6.00-7.00 Mo; 0.18-0.25 N
 904L N08904 0.02 2.00 1.00 19.0-23.0 23.0-28.0 4.0-4.5 Mo;1.0-2.0 Cu
 Cronifer N08925 0.02 1.00 0.50 24.0-26.0 19.0-21.0 6.0-7.0 Mo; 0.8-1.5 Cu;
 1925 hMo 0.10-0.20 N
 a. Although sulphur and phosphorus contents are not listed in this table due to limited space, they are specified; see appropriate material
 standard for more details.
 b. Free-machining grade with 0.15% minimum sulphur.
 c. XM designations in this column are ASTM designations for the listed alloy.
 Single values are maximums, unless otherwise specified.
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AUSTENITIC STAINLESS STEELS

302

General

Purpose

 

 

202

N & Mn

partially

replaces

Ni

 

 

 

 

302B

Si added

to increase

scaling

resistance

 

205

N & Mn

partially

replaces

Ni

 

201

N & Mn

partially

replaces

Ni

 

 

 

 

 

 

 

 

 

 

 

 

317

More

Mo & Cr

added for

better

corrosion

resistance

316

Mo added

to increase

corrosion

resistance

 

309

309S

Cr & Ni

increased

for high

temperature

308

Higher

Cr & Ni

used

primarily

for welding

304

Lower C

for better

corrosion

resistance

in weld

fabrication

305

Ni increased

to lower

work

hardening

 

303

S added

to improve

machining

 

 

301

Cr & Ni

lowered

to increase

work

hardening

 

 

 

 

 

 

 

 

 

 

 

 

 

 

317L

C reduced

for

welding

 

 

316L

C reduced

for

welding

 

 

310

310S

Same as

309 only

more so

 

347

Cb added

to prevent

carbide

precip.

 

321

Ti added

to prevent

carbide

precip.

 

304L

C reduced

even

further

 

 

384

More Ni

to lower

work

hardening

 

303Se

Se added

for better

machined

surfaces

 

317LMN

Mo added

N added

 

 

 

316N

N added

to increase

strength

 

 

314

Si

increased

for higher

heat

resistance

348

Ta & Co

restricted

for

nuclear

application

304N

N added

to

increase

strength

 

S30430

Cu added

to improve

cold

working

 

316F

S & P

increased

to improve

machining

 

330

Ni added

to resist

carburization

& thermal

shock

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 The Ferrous Metals Data Book

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 The Ferrous Metals Data Book