URAL STEEL | 002_ROLLED PRODUCTS

LONG PRODUCTS Tubular billets out of carbon steel grades according to German standards (DIN 1629, 1630, 17121)

Steel grade	Standard document	Dimensions		Scope of use
		structural section, mm	length, m
St 37–2 St 37–3 St 37–0 St 37–4 St 44–2 St 44–3 St 44–0 St 44–4 St 52–3 St 52–0 St 52–4	ТУ 14–104–142–93	Round, diameter 90–160	cut-to-length	Pipes manufacture according to German standards

CHEMICAL COMPOSITION

Steel grade		Deoxidation type	Element portion by mass, %						Addition of nitrogen-binding elements (e.g. , Al no more than 0.02)
Short designa tion	Material no.		C	S	P	N2*	Si**	Mn**
St 37–2	1,0038	killed	0,17	0,05	0,05	0,009	–	–	–
St 37–3	1,0116	killed	0,17	0,04	0,04	–	–	–	yes
St 37.0	1,0254	killed	0,17	0,04	0,04	0,009	–	–	–
St 37.4	1,0255	killed	0,17	0,04	0,04	–	0,35	0,35	yes
St 44–2	1,0044	killed	0,21	0,05	0,05	0,009	–	–	–
St 44–3	1,0144	killed	0,2	0,04	0,04	–	–	–	yes
St 44.0	1,0256	killed	0,21	0,04	0,04	0,009	–	–	–
St 44.4	1,0257	killed	0,2	0,04	0,04	–	0,35	0,4	yes
St 52–3	1,057	killed	0,22	0,04	0,04	–	0,55	1,6	yes
St 52.0	1,0581	killed	0,22	0,035	0,04	–	0,55	1,6	yes
St 52–4	1,0421	killed	0,22	0,035	0,04	–	0,55	1,6	yes

* The exceeding of the max. value of the nitrogen portion by mass is permissible, in case, if for each 0.001 percent of nitrogen the phosphorus portion
by mass is observed by 0.005 percent below the max value. However, the nitrogen portion by mass shall not exceed 0.012 percent in the heat analysis
and 0,014 percent in the finished rolled product.
** The sign «-» means that the element content is not specified but determined and entered in a certificate.

MECHANICAL PROPERTIES

Steel grade	Yield strength ?T, N/mm2 (kg- wt/mm2)	Ultimate strength ?B, N/mm2 (kg-wt/mm2)	Elongation ?5,%, no more than	Impact Strength А2)
				test temperature	J (kg-wt·m), no more than
St 37–2	225 (23,0)	340–450 (34,5–46,0)	26	20	27 (2,8)
St 37–3	225 (23,0)	340–450 (34,5–46,0)	26	-20	27 (2,8)
St 37.0	225 (23,0)	340–450 (34,5–46,0)	26	-	-
St 37.4	225 (23,0)	340–470 (34,5–48,0)	26	20	43 (4,4)
St 44–2	265 (27,0)	410–530 (42,0–54,0)	23	20	27 (2,8)
St 44–3	265 (27,0)	410–530 (42,0–54,0)	23	-20	27 (2,8)
St 44.0	265 (27,0)	410–530 (42,0–54,0)	23	-	-
St 44.4	265 (27,0)	410–530 (42,0–54,0)	23	20	43 (4,4)
St 52–3	345 (35,0)	490–632 (50,0–64,5)	23	-20	27 (2,8)
St 52.0	345 (35,0)	490–632 (50,0–64,5)	23	-	-
St 52–4	345 (35,0)	490–632 (50,0–64,5)	23	20	43 (4,4)

Remark.
For billets of more than 90 mm diameter the elongation is permissible by 2 percent abs., for billets of more than 150 mm diameter the elongation is permissible by 3 percent abs.
The average value of three tests but for all that below the min value can be only one separate value, and, namely, maximum by 30%.