Bohler	C	Si	Mn	Cr	Mo	V	Co	W	Others	EN / DIN	AISI	JIS	Typical HRC
K105	1.60	0.35	0.30	11.50	0.60	0.30		0.50		1.2601	~D2	~SKD11	58 - 62
										X165CrMoV12
K110	1.55	0.30	0.30	11.30	0.75	0.75				1.2379	D2	~SKD11	58 - 62
										X155CrMoV12
K306	0.51	0.95	0.30	5.00	1.40	1.40				~1.2345			52 - 56
										~X50CrMoV5 1
K329	0.52	0.95	0.40	8.00	1.40	0.45							50 - 58
K340	1.10	0.90	0.40	8.30	2.10	0.50			Al, Nb				58 - 62
ECOSTAR
K360	1.25	0.90	0.35	8.75	2.70	1.18			Al, Nb	patent			58 - 62
ISODUR
K390	2.47	0.55	0.40	4.20	0.40	9.00	2.00	1.00					61 - 63
MICROCLEAN
K460	0.95	0.25	1.10	0.55		0.10		0.55		1.2510	O1	~SKS3	59 - 61
										~100MnCrW4
K490	1.40			6.40	1.50	3.70		3.50	+				58 - 62
MICROCLEAN
K890	0.85	0.55		4.35	2.80	2.10	4.50	2.55					58 - 62
MICROCLEAN