Quenched and tempered alloyed steel F1270

Annealed.

Quenched and tempered.

UNE 36-012-75

Good shock and torsion stress resistance.

Its most common applications are for crankshafts, connection rods and medium size shafts.

	C	Mn	Si	P	S	Cr	Mo	Ni
Min.	0,32	0,55	0,15			0,65	0,15	1,60
Max.	0,38	0,85	0,40	0,035	0,035	0,95	0,30	2,00

Annealed ºC	Temple ºC	Tempered ºC
640-670	820-840 Oil	540-660

Dimensions	Re (N/mm²)	Rm (N/mm²)	A (%).	KV (J)	Guidance hardness
Mm.	Min.	Min.	Max.	Min.	Min.	HB
	≤ 16	930	1130	1320	11	29	331-388
> 16	≤ 40	830	1030	1220	11	29	302-363
> 40	≤ 100	690	880	1180	12	29	262-321
> 100	≤ 160	590	780	980	12	29	232-294
> 160	≤ 250	540	740	880	12	29	217-265
> 250		On request

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