BS Aerospace S100 Chemical Composition Mechanical Properties
British Standard Aerospace products for bar have their own individual standard and are not summarized in a single Standard. The table shows most of the grade numbers that are commonly encountered.
BS '100' bar grades
Chemical Composition (Max, unless stated).
S, 0.025% and P, 0.035% maxima apply to most of the grades shown , except gra
des S124, S137, where sulphur is added (0.15/0.40%). Grades S160 and S161 have S, 0.030% and P,0.025% maxima
Tensile Strength (Min, unless stated)
Impact strengths are specified for some grades and can depend on the limiting ruling section (LRS). Check the standards for impact limits.
Hardness HB (Max, unless stated). Figures shown apply to the smallest LRS
Status; 'C' represents Current, 'W' represents Withdrawn
Treatments: CW = Cold Worked ; HT = Hardened and Tempered ; FHT = Final Heat Treatment ; S = Softened
For heat treatable grades only the HT or FHT mechanical strength values are shown.
| Norm |
S |
C |
Si |
Mn |
Cr |
Mo |
Nickel |
Others |
Treat
ment |
Proof (Mpa) |
UTS (Mpa) |
El.% |
Hard.
(HB) |
| S61 |
W |
0.12 |
0.8 |
1.0 |
11.5/13.5 |
- |
1.0 |
- |
HT |
355 |
540/
695 |
20 |
152 |
| 3S62 |
W |
0.18/0.25 |
0.8 |
1.0 |
12.0/14.0 |
- |
1.0 |
- |
HT |
525 |
695/
849 |
15 |
201 |
| 7S80 |
C |
0.12/0.20 |
1.0 |
1.0 |
15.0/18.0 |
0.3 |
2.0/
3.0 |
- |
HT |
690 |
880/
1080 |
12 |
255/321 |
| 2S111 |
W |
0.37/0.47 |
1.0/
2.0 |
0.5/
1.0 |
13.0/15.0 |
0.4/0.6 |
13.0/
15.0 |
W 2.2
/3.0 |
HT |
- |
- |
- |
269 |
| 2S124 |
W |
0.15/0.25 |
1.0 |
1.5 |
12.0/14.0 |
0.6 |
1.0 |
Zr 0.6 |
HT |
448 |
695/
849 |
11 |
201/255 |
| S125 |
W |
0.15 |
0.2/
1.0 |
0.5/
2.0 |
22.0/25.0 |
- |
13.0/
16.0 |
Ti 4xC |
S |
216 |
540 |
28 |
- |
| S126 |
W |
0.15 |
0.2/
1.0 |
0.5/
2.0 |
22.0/25.0 |
- |
13.0/
16.0 |
Nb 8xC |
S |
216 |
540 |
28 |
- |
| S127 |
W |
0.15 |
0.2/
1.0 |
0.5/
2.0 |
23.0/26.0 |
- |
16.0/
19.0 |
Ti 4xC |
S |
216 |
540 |
28 |
- |
| S128 |
W |
0.15 |
0.2/
1.0 |
0.5/
2.0 |
23.0/26.0 |
- |
16.0/
19.0 |
Nb 8xC |
S |
216 |
540 |
28 |
- |
| 2S129 |
C |
0.08 |
0.2/
1.0 |
0.5/
2.0 |
17.0/19.0 |
1.0 |
8.0/
11.0 |
Ti 5xC/0.8 |
S |
210 |
540 |
35 |
183 |
| 2S130 |
C |
0.08 |
0.2/
1.0 |
0.5/
2.0 |
17.0/19.0 |
0.7 |
8.0/
11.0 |
Nb 10xC/1.1 |
S |
210 |
540 |
35 |
183 |
| 2S137 |
C |
0.12/0.20 |
1.0 |
1.5 |
15.0/18.0 |
0.6 |
2.0/
3.0 |
- |
HT |
690 |
880/
1080 |
11 |
255/321 |
| S141 |
C |
0.08/0.14 |
0.8 |
1.0 |
12.0/14.0 |
- |
1.0 |
- |
HT |
417 |
587/
788 |
20 |
174/234 |
| 2S143 |
C |
0.07 |
0.6 |
1.0 |
13.2/14.7 |
1.2/2.0 |
5.0/
5.8 |
Cu 1.2/2.0 Nb 0.1/0.4 |
FHT |
780 |
930/
1080 |
15 |
277/341 |
| 3S144 |
C |
0.07 |
0.6 |
1.0 |
13.2/14.7 |
1.2/2.0 |
5.0/
5.8 |
Cu 1.2/2.0 Nb 0.1/0.4 |
FHT |
1030 |
1130/
1330 |
12 |
352/401 |
| 3S145 |
C |
0.07 |
0.6 |
1.0 |
13.2/14.7 |
1.2/2.0 |
5.0/
5.8 |
Cu 1.2/2.0 Nb 0.1/0.4 |
FHT |
1030 |
1270/
1470 |
10 |
375/429 |
| S151 |
C |
0.08/0.13 |
0.35 |
0.5/
0.9 |
11.0/12.5 |
1.5/2.0 |
2.0/
3.0 |
N
0.02/
0.04
V 0.25/0.4 |
HT |
760 |
930/
1130 |
14 |
286/331 |
| S159 |
C |
0.08/0.13 |
0.35 |
0.5/
0.9 |
11.0/12.5 |
1.5/2.0 |
2.0/
3.0 |
N 0.02/
0.04
V 0.25/0.4 |
HT |
900 |
1100/
1300 |
8 |
321/388 |
| S160 |
C |
0.03 |
1.0 |
2.0 |
17.0/19.0 |
0.75 |
9.0/
12.0 |
N 0.1 |
S |
210 |
540 |
35 |
183 |
| S161 |
C |
0.03 |
1.0 |
2.0 |
16.5/18.5 |
2.0/3.0 |
11.0/
14.0 |
N 0.1 |
S |
210 |
540 |
35 |
183 |
| S205 |
C |
0.15 |
0.2/
1.0 |
0.5/
2.0 |
17.0/19.0 |
- |
7.5/
9.0 |
- |
CW |
- |
2150 |
- |
- |
| S206 |
C |
0.09 |
1.0 |
1.0 |
16.0/18.0 |
- |
6.5/
7.75 |
- |
FHT |
- |
1470/
2530 |
- |
- |
Related References:
1. British Standard BS for Stainless Steel for General Application
2. British Standard for Welding and Fabrication of Stainless Steel
3. BS ASTM Tolerances Surface Finish and Test of Stainless Steel
4. British EN Standard Strength of Steel
5. BS Pipe Tube and Fitting Standard and Specification
6. BS ASTM Tolerances Surface Finish and Test of Stainless Steel
7. EN ASTM Stainless Steel for Pressure Vessel Application
9. BS Aerospace S100 Chemical Composition Mechanical Properties
10. BS Aerospace S500 Chemical Composition Mechanical Properties
11. BS 3100 Chemical Composition of Stainless Steel
12. BS 3100 1991 Cast Steel Chemical Composition
13. BS 970 Stainless Steel Chemical Composition
14. BS 6744 Chemical Composition and Mechanical Properties of stainless steel
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