Chemical and mechanical properties of British Standard Aerospace S100 bar grades

Introduction

British Standard Aerospace products for bar have their own individual standards and are not summarized in a single Standard. The table shows most of the grade numbers that are commonly encountered.

BS '100' bar grades

Composition (Max, unless stated).
S, 0.025% and P, 0.035% maxima apply to most of the grades shown , except grades 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Status; 'C' represents Current, 'W' represents Withdrawn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.

 
Standard Status C Si Mn Cr Mo Ni Others Treatment Proof (Mpa) UTS (Mpa) El.% Hard.(HB)
S61(1964) W 0.12 0.8 1.0 11.5/13.5 - 1.0 - HT 355 540/695 20 152
3S62(1964) W 0.18/0.25 0.8 1.0 12.0/14.0 - 1.0 - HT 525 695/849 15 201
7S80(2002) 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(1964) 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(1964) 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(1964) 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(1964) 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(1964) 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(1964) 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(1976) 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(1976) 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(1976) 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(1968) C 0.08/0.14 0.8 1.0 12.0/14.0 - 1.0 - HT 417 587/788 20 174/234
2S143(1976) 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(1995) 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(1996) 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(1975) 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(1981) 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(1990) 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(1990) 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 (2004) C 0.15 0.2/1.0 0.5/2.0 17.0/19.0 - 7.5/9.0 - CW - 2150 - -
S206(1999) C 0.09 1.0 1.0 16.0/18.0 - 6.5/7.75 - FHT - 1470/2530 - -
 

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