817M40 AS ROLLED / ANNEALED / HT (En 24)

BS 970	SAE (AISI)	WERKSTOFF No
817M40	9850	1.6565

CHEMICAL COMPOSITION

Carbon	Silicon	Manganese	Nickle	Chromium	Molybdenum	Sulphur	Phosphorus
0.35 - 0.45	0.10 - 0.35.	0.45 - 0.70	1.30 - 1.80	0.90 - 1.40	0.20 - 0.35	0.05 Max	0.05 Max.

MECHANICAL PROPERTIES

PROPERTY

HARDENED and TEMPERED CONDITION

	T	U	V	W	X	Z
Limited Ruling Section Min.	254	102	64	29	29	29
Tensile Strength, MPa. Min.	850 / 1000	930 / 1080	1000 / 1160	1080 / 1240	1160 / 1310	1540
Yield Stress, MPa, Min.	635	740	835	925	1005	1130
Elongation percent, Min.	13	12	12	11	10	5
Izod Impact Value, Joule, Min.	40.7	47.5	47.5	40.7	34	11
Brinell Hardness Number	248 / 302	269 / 321	293 / 341	211 / 375	341 / 388	444 min.

STANDARD STOCK SIZES IN THE "AS ROLLED" and HEAT TREATED CONDITION

SIZE	Kg/m		SIZE	Kg/m		SIZE	Kg/m		SIZE	Kg/m		SIZE	Kg/m		SIZE	Kg/m
20mm	2.466		50mm	15.413		80mm	39.458		115mm	81.537		170mm	178.179		230mm	326.148
25mm	3.853		55mm	18.650		85mm	44.545		120mm	88.781		180mm	199.757		250mm	385.336
30mm	5.549		60mm	22.195		90mm	49.939		130mm	104.195		190mm	222.570
35mm	7.553		65mm	26.049		95mm	55.642		140mm	120.841		200mm	246.614
40mm	9.865		70mm	30.210		100mm	61.654		150mm	138.721		210mm	271.893
45mm	12.485		75mm	34.680		108mm	71.846		160mm	157.833		220mm	298.403

TYPICAL USES

Automobile main shafts, axle shafts, connecting rod bolts, synchronising cones, push rods, differential shafts, motorcycle kick starter ratchets, 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.