| BS 970 |
SAE (AISI) |
WERKSTOFF NO. |
| 817 M 40 |
9850 |
1.6565 |
CHEMICAL COMPOSITION
| CARBON |
: 0,35 - 0,45 |
| SILICON |
: 0,10 - 0,35 |
| MANGANESE |
: 0,45 - 0,70 |
| NICKEL |
: 1,30 - 1,80 |
| CHROMIUM |
: 0,90 - 1,40 |
| MOLYBDENUM |
: 0,20 - 0,35 |
| SULPHUR |
: 0,05 MAX |
| PHOSPHORUS |
: 0,05 MAX |
MECHANICAL
PROPERTIES |
CONDITION |
| T |
U |
V |
W |
X |
Z |
| Limited Ruling Sections; mm |
254 |
102 |
64 |
29 |
29 |
29 |
| Tensile Strength; MPa |
850 / 1000 |
930 / 1080 |
1000 / 1160 |
1080 / 1240 |
1160 / 1310 |
1540 Min. |
| Yield Stress; MPa Min. |
635 |
740 |
835 |
925 |
1005 |
1130 |
| Elongation, percent Min. |
13 |
12 |
12 |
11 |
10 |
5 |
| Izod Impact Value, Joule |
40,7 |
47,5 |
47,5 |
40,7 |
34 |
11 |
| Brinell Hardness Number |
248 / 302 |
269 / 331 |
293 / 352 |
311 / 375 |
341 / 401 |
444 Min. |
STANDARD STOCK SIZES IN THE AS ROLLED OR NORMALIZED CONDITION
| SIZE |
Kg/m |
SIZE |
Kg/m |
SIZE |
Kg/m |
SIZE |
Kg/m |
| 20 |
2,466 |
70 |
30,210 |
130 |
104,195 |
230 |
326,148 |
| 25 |
3,853 |
75 |
34,680 |
140 |
120,841 |
240 |
355,125 |
| 30 |
5,549 |
80 |
39,458 |
150 |
138,721 |
250 |
385,336 |
| 35 |
7,553 |
85 |
44,545 |
160 |
157,833 |
280 |
493,40 |
| 40 |
9,865 |
90 |
49,393 |
170 |
178,179 |
305 |
586,34 |
| 45 |
12,485 |
95 |
55,642 |
180 |
199,757 |
330 |
685,20 |
| 50 |
15,413 |
100 |
61,654 |
190 |
222,570 |
350 |
769,84 |
| 55 |
18,650 |
108 |
71,846 |
200 |
246,641 |
|
|
| 60 |
22,195 |
115 |
81,537 |
210 |
271,893 |
|
|
| 65 |
26,049 |
120 |
88,781 |
220 |
298,403 |
|
|
TYPICAL USES
Automobile main shafts, axle shafts, connecting rod bolts, synchronising cones, push rods, studs, differential shafts, motorcycle kick starter rachets, pinion sleeves, mandrel bars for tube manufacturing, gun barrels, breech mechanism parts, high duty engine connecting rods, high temperature bolts in oil refining and steam installations, various parts of machine tools such as spindle gears, compensating washers, power transmission gears, slide racks, and slide cams.
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