EN 10297-1 Alloy Steel Tube

European Standard

EN 10297-1 seamless circular steel tubes for mechanical and general engineering purposes

Alloy Steel Tube

Chemical Composition

Steel Grade	C		Si		Mn		P	S	Cr		Mo		Ni		Cu
	Min	Max	Min	Max	Min	Max	Max	Max	Min	Max	Min	Max	Min	Max	Max
41Cr4	0.38	0.45	–	0.40	0.60	0.90	0.035	0.035	0.90	1.20	–	–	–	–	–
25CrMo4	0.22	0.29	–	0.40	0.60	0.90	0.035	0.035	0.90	1.20	0.15	0.30	–	–	–
30CrMo4	0.27	0.34	–	0.35	0.35	0.60	0.035	0.035	0.80	1.15	0.15	0.30	–	–	–
34CrMo4	0.30	0.37	–	0.40	0.60	0.90	0.035	0.035	0.90	1.20	0.15	0.30	–	–	–
42CrMo4	0.38	0.45	–	0.40	0.60	0.90	0.035	0.035	0.90	1.20	0.15	0.30	–	–	–
36CrNiMo4	0.32	0.40	–	0.40	0.50	0.80	0.035	0.035	0.90	1.20	0.15	0.30	0.90	1.20	–
30CrNiMo8	0.26	0.34	–	0.40	0.30	0.60	0.035	0.035	0.80	2.20	0.30	0.50	1.80	2.20	–
41NiCrMo7-3-2	0.38	0.44	–	0.30	0.60	0.90	0.025	0.025	0.70	0.90	0.15	0.30	1.65	200	0.25

 

Mechanical Properties

Steel Grade	Yield Strength (ReH) Mpa				Tensile Strength (Rm) Mpa				Elongation A% min
	Wall Thickness min				Wall Thickness min
	≤8	>8≤20	>20≤50	>50≤80	≤8	>8≤20	>20≤50	>50≤ 80	≤8		>8≤ 20		>20≤50		> 50≤ 80
									L	T	L	T	L	T	L	T
41Cr4	800	660	560	–	1000	900	800	–	11	9	12	10	14	12	–	–
25CrMo4	700	600	450	400	900	800	700	650	12	10	14	12	15	13	16	14
30CrMo4	750	630	520	480	950	850	750	700	12	10	13	11	14	12	15	13
34CrMo4	800	650	550	500	1000	900	800	750	11	9	12	10	14	12	15	13
42CrMo4	900	750	650	550	1100	1000	900	800	10	8	11	9	12	10	13	11
36CrNiMo4	900	800	700	600	1100	1000	900	800	10	8	11	9	12	10	13	11
30CrNiMo8	1050	1050	900	800	1250	1250	1100	1000	9	7	9	7	10	8	11	9
41NiCrMo7-3-2	950	870	800	700	1150	1050	1000	900	9	7	10	8	11	9	12	10
Note: L=longitudinal, T=transverse