GRADE DESCRIPTIONS
| Alloy/UNS | Description | C max | Ni | Cr | Other | AMS | ASTM | Density (lb./cu.in.) |
|||
Austenitic Grades |
|||||||||||
| 201 S20100 |
Chromium nickel manganese was developed as a satisfactory alternate for Type 301 for many applications. | .15 | 3.5-5.5 | 16.0-18.0 | Mn P S |
5.5-7.5 .06 max .03 max |
N Si |
.025 1.0 max |
A-412 | .28 | |
| 301 S30100 |
Chromium nickel steel capable of attaining high tensile strength and ductility by moderate or severe cold working. | .15 | 6.0-8.0 | 16.0-18.0 | Mn P |
2.0 max .045 max |
S Si |
.03 max 1.0 max |
5517 5519 |
A-240 A-177 |
.29 |
| 302 S3020 |
General purpose chromium nickel stainless steel. Its corrosion resistance is superior to Type 301. It can be cold worked to high tensile strengths but with a slightly lower ductility than Type 301. | .15 | 8.0-10.0 | 17.0-19.0 | Mn P |
2.0 max .045 max |
S Si |
.03 max .75 max |
5516 | A-240 | .29 |
| 304 S30400 |
Low carbon chromium nickel stainless and heat resisting steel; somewhat superior in corrosion resistance to Type 302. | .08 | 8.0-10.5 | 18.0-20.0 | Mn P |
2.0 max .045 max |
S Si |
.03 max .75 max |
5513 | A-240 | .29 |
| 304L S30403 |
Very low carbon chromium nickel steel with general corrosion resistance similar to Type 304 and superior resistance to intergranular corrosion following welding or stress relieving. Recommended in parts fabricated by welding which cannot be subsequently annealed. | .03 | 8.0-12.0 | 18.0-20.0 | Mn P |
2.0 max .045 max |
S Si |
.03 max .75 max |
5511 | A-240 | .29 |
| 305 S30500 |
High corrosion resistant alloy with very low work hardening rate. Designed for extra deep drawing and spinning. | .12 | 10.0-13.0 | 17.0-19.0 | Mn P |
2.0 max .045 max |
S Si |
.03 max .75 max |
5514 | A-240 | .29 |
| 309 S30900 |
Highly corrosion resistant chromium nickel grade. Carbon limited to .08 to reduce carbon precipitation during welding. | .08 | 12.0-15.0 | 22.0-24.0 | Mn P |
2.0 max .045 max |
Si S |
.75 max .03 max |
5523 | A-167 | .29 |
| 310 S31000 |
Similar to Type 309, with higher corrosion and oxidation resistance at elevated temperatures. | .08 | 19.0-22.0 | 24.0-26.0 | Mn P |
2.0 max .045 max |
S Si |
.03 max 1.5 max |
5521 | A-167 | .29 |
| 316 S31600 |
Chromium nickel molybdenum stainless heat resistant steel with superior corrosion resistance to other chromium nickel steels when exposed to many chemical corrodents, pitting resistance and superior creep strength at elevated temperatures. | .08 | 10.0-14.0 | 16.0-18.0 | Mn P S |
2.0 max .045 max .03 max |
Si Mo |
.75 max 2.0-3.0 |
5524 | A-240 | .29 |
| 316L S31603 |
Low carbon chromium nickel stainless steel with general corrosion resistance similar to Type 316 but with superior inter-granular corrosion resistance following welding or stress relieving. Recommended for parts fabricated by welding which cannot be subsequently annealed. | .03 | 10.0-14.0 | 16.0-18.0 | Mn P S |
2.0 max .045 max .03 max |
Si Mo |
.75 max 2.0-3.0 |
5507 | A-167 | .29 |
| T316Ti | Similar to type 316L with the addition of titanium to tie up the carbon and stabilize the chemistry. | .08 | 10.0-14.0 | 16.0-18.0 | Mn P S |
2.0 max .045 max .030 max |
Si Ti N Mo |
.75 max 5x (C+N) min .70 max .10 max 2.0-3.0 |
|||
| 317L S31703 |
Similar to Type 316L with additional molybdenum to improve corrosion resistance. | .03 | 11.0-15.0 | 18.0-20.0 | Mn P S |
2.0 max .045 max .030 max |
Si Mo |
1.0 max 3.0-4.0 |
A-167 | .29 | |
| 321 S32100 |
Chromium nickel steel containing titanium; recommended for parts fabricated by welding which cannot be subsequently annealed and for parts to be used at temperatures between 800oF and 1850oF. | .08 | 9.0-12.0 | 17.0-19.0 | Mn P |
2.0 max .045 max |
S Si Ti |
.030 max .75 max 5x (C+N) min .70 max |
5510 | A-167 | .29 |
| 347 S34700 |
Chromium nickel steel containing columbium and tantalum; recommended for parts fabricated by welding which cannot be subsequently annealed and for parts to be used at temperatures between 800oF and 1850oF. | .08 | 9.0-13.0 | 17.0-19.0 | Mn P |
2.0 max .045 max |
S Si Cb+Ta |
.03 max 1.0 max 10xC min |
5512 | A-167 | .29 |
Ferritic Grades |
|||||||||||
| 430 S43000 |
General purpose grade, corrosion resistant, straight chromium grade, non-heat-treatable. | .12 | 0.75 | 16.0-18.0 | Mn P S |
1.0 max .040 max .030 max |
Si | 1.0 max | 5503 | A-176 | .28 |
| 434 S43400 |
Ferritic grade with improved corrosion resistance over 430 due to the addition of molybdenum. Used mainly for automotive trim and exterior environments. | .12 | 0.75 | 16.0-18.0 | Mn P |
1.0 max .040 max |
S Si Mo |
.030 max 1.0 max .75-1.25 |
.28 | ||
| 446 S44600 |
Corrosion and heat resistant steel with maximum chromium. Principally used for manufacture of parts which must resist high temperatures in service without scaling up to 200oF. | .20 | 23.0-27.0 | Mn P S |
1.5 max .040 max 0.30 max |
Si N |
1.0 max 0.25 |
.27 | |||
Martensitic Grades |
|||||||||||
| 410 S41000 |
General purpose corrosion and heat resistant chromium steel. Good corrosion resistance, fair milling properties; can be heat treated to HRC35/45. | .15 | 11.5-13.5 | Mn P |
1.0 max .040 max |
S Si |
.010 max 1.0 max |
5504 | A-176 | .28 | |
| 420 S42000 |
Chromium steel capable of hardening to a maximum of approximately HRC54 max. | .15 | 12.0-14.0 | Mn P |
1.0 max .04 max |
S Si |
.03 max 1.0 max |
5506 | A-176 | .28 | |
| 4021 EN10088 |
Chromium steel capable of hardening to a maximum HRC 49. | .16-.25 | 12.0-14.0 | Mn P |
1.5 max .040 max |
S Si |
.015 max 1.0 max |
.28 | |||
| 4028 EN10088 |
Chromium steel capable of hardening to a maximum HRC 54. | .26-.35 | 12.0-14.0 | Mn P |
1.5 max .040 max |
S Si |
.015 max 1.0 max |
.28 | |||
| 4034 EN10088 |
Chromium steel capable of hardening to a maximum HRC 56. | .43-.50 | 12.5-14.5 | Mn P |
1.0 max .040 max |
S Si |
.015 max 1.0 max |
.28 | |||
| 4110 SEW400 |
Chromium steel capable of hardening to a maximum HRC 57. | .48-.60 | 13.0-15.0 | Mn P S |
1.0 max .040 max .015 max |
Mo Si V |
.5-.8max 1.0 max .15 max |
.28 | |||
| 440A S44002 |
High carbon grade, high chromium; capable of being heat treated to a hardness range of HRC61/63. | .60-.75 | 16.0-18.0 | Mn P S |
1.0 max .040 max .030 max |
Si Mo |
1.0 max .75 max |
A-176 | .28 | ||
Precipitation Hardening Grades |
|||||||||||
| 17-7PH® 3 SS17700 |
Chromium nickel stainless steel with good workability, easy hardening, high strength and excellent mechanical properties at elevated temperatures. Can be heat treated at relatively low temperatures for high strength properties. | .09 | 6.5-7.75 | 16.0-18.0 | Al Si P |
.75-1.5 1.0 max .040 max |
S | .030 max | 5528 | A-693 | .28 |
| 17-4PH3 S17400 |
Precipitation hardening stainless steel with high strength and good corrosion resistance to 600oF. Used in aerospace, chemical, petrochemical, paper and metalworking. | .07 | 3.0-5.0 | 15.0-17.5 | Mn P S |
1.0 max .04 max .030 max |
Si Cu |
1.0 max 3.0-5.0 |
5604 | A-693 Type 630 |
.28 |
| PH15-7M0® 3 S15700 |
Similar to 17-7PH™ 3 alloy with molybdenum added for higher strength with heat treatment. | .09 | 6.50-7.75 | 14.0-16.0 | Mn Si P |
1.0 max 1.0 max 0.4 max |
S Mo Al |
.04 max 2.0-3.0 .75-1.50 |
5520 | A-693 | .28 |
| A286™ 4 S66286 |
Iron, nickel and chromium alloy designed for service up to 1300oF where high strength and corrosion resistance are required. | .08 | 24.0-27.0 | 13.5-16.0 | Mn Si P Al |
2.0 max 1.0 max .04 max 0.35 max |
Ti Mo V S |
1.9-2.35 1.0-1.5 1.5 0.30 max |
5525 | .29 | |
| AM350™ 4 S35000 |
Similar to 17-7PH™ 3 alloy and PH15-7Mo™ 3 alloy with slightly higher elevated temperature capability. | .07-.11 | 4.0-5.0 | 16.0-17.0 | Mn Si P |
.50-1.25 .50 max .04 max |
S Mo N |
0.30 max 2.5-3.25 .07-.13 |
5548 | A-693 | .29 |
Back to Contents