| Stainless Steels |
Interlloy
Grade |
Nearest
Related
Specification |
And Properties |
Description &
Applications |
| C |
Ni |
Cr |
Mo |
Other |
| Austenitic Stainless Steels |
| 303 |
AS2837-1986-303
AISI TYPE 303
BS970-303 S31 & S42
ASTM A582/582M-303 |
0.15
MAX |
9.00 |
18.0 |
0.8 |
0.25S |
Free machining stainless, used where extensive machining is involved. |
| 304 |
AS2837-1986-304
AISI TYPE 304
BS970-304
ASTM A276-304 |
0.08
MAX |
9.0 |
19.0 |
- |
- |
Readily formed and welded stainless,
used mainly in domestic, dairy and decorative appliances. |
| 310 |
AS 2837-310
AISI TYPE 310
BS970-310 S31
ASTM A276-310 |
.15
MAX |
21% |
25% |
- |
- |
For continuous high temperature service in the range 850 - 1000oC. |
| 316 |
AS2837-1986-316
AISI TYPE 316
BS970-316 S31 & S33
ASTM A276-316 |
0.08
MAX |
12.0 |
17.0 |
2.25 |
- |
For certain corrosive conditions particularly
those involving Pit-type corrosion in the chemical and allied industries. |
| 316L |
AS2837-1986-316L
AISI TYPE 316L
BS970-316 S11 & S13
ASTM A276-316L |
0.03
MAX |
12.0 |
17.0 |
2.25 |
- |
Low carbon version of 316 quality showing added resistance to weld decay. |
| 321 |
AS2837-1986-321
AISI TYPE 321
BS970-321 S31
ASTM A276-321 |
0.08
MAX |
10.0 |
18.0 |
- |
0.50Ti |
Titanium stabilised weldable grade.
Corrosion resistant and scaling resistant at temperatures up to 800oC. |
| Martensitic Stainless Steels |
| 410 |
AS 2837-410
AISI TYPE 410
BS 970-410 S21
ASTM A276-410 |
.12 |
.5 |
12.5 |
- |
- |
A hardenable grade of stainless with good corosion resistance properties. |
| 416 |
AS2837-1986-416
AISI TYPE 416
BS970-1991 416
ASTM A582-416 |
0.10 |
1.00
MAX |
12.5 |
0.6
MAX |
1.2S |
General engineering applications where free machining properties are required. Slightly inferior corrosion resistance to Type 410. |
| 420 |
AS2837-1986-420
AISI TYPE 420
BS970-420 S29
ASTM A276-42000 |
0.25 |
1.00
MAX |
12.5 |
- |
- |
General engineering applications such as pump and valve parts. |
| 420C |
BS970: PART 3 1991-420 S37
ASTM A276-92-S420 S42010 |
0.30 |
1.00
MAX |
12.5 |
- |
- |
Stainless developed to provide higher hardness after heat treatment. |
| 431 |
AS2837-1986-431
AISI TYPE 431
BS970: PART 1 1983-431 S29
ASTM A276-431 |
0.18 |
2.20 |
16.0 |
- |
- |
Hardenable steel with corrosion resistance approaching Type 302.
Suited for pump shafts, or other uses where high tensile properties are required. |
| 440C |
AS2837-1986-440C
AISI TYPE 440C
ASTM A276-440C |
1.10 |
1.00
MAX |
17.0 |
0.75
MAX |
- |
High carbon martensitic grade.
High attainable hardness make it suitable to abrasion and wear resistance. |
| Precipitation Hardened Stainless Steels |
| 630
17-4PH
|
AS2837-1986-630
AISI TYPE 630
ASTM A56/A564M-630
SAE J467 17-4PH
UNS S17400 |
0.07
MAX |
4 |
16 |
- |
3.70
Cu
0.25
Nb
|
Martensitic age hardenable stainless.
Good weldability and corrosion resistance comparable to 304.
Suitable for pump shafts, boat shafts, valve stems etc. |
| Duplex Stainless Steel |
| 2205 |
ASTM-A276-98B UNS-S31803
W.NR 1.4462
DIN X 2 Cr Ni Mo N 22-5-3 |
0.03
MAX |
5.50 |
22.00 |
3.00 |
0.14N |
A ferritic/austenitic stainless steel providing an excellent combination of high yield strength and corrosion resistance.
Better than 316 in most conditions. |
