Steel 17GS

Designation

Name	The value
Designation GOST Cyrillic	17ГС
Designation GOST Latin	17GC
Transliteration	17GS
By chemical elements	17MnС

Description

Steel 17GS used: for the manufacture of shells vehicles, bottoms, vessels, flanges and other welded parts working under pressure at temperatures from -40 °C to +475 °C; parts and elements of pipelines of steam and hot water nuclear power plants (NPP), with an estimated temperature not higher than 350 °C at an operating pressure of less than 2.2 MPa (22 kgf/cm²); welded longitudinal pipes of strength group K52 for construction of gas pipelines, oil pipelines and oil product pipelines; ekspandirovannogo longitudinal electric-welded pipes intended for construction of high pressure pipelines.

Note

Steel low-alloy silico-manganese. The degree of deoxidation — SP.
Steel 17GS provides strength grade sheet, universal broadband rental and roll-formed profiles KP 325 with plate thickness of 10 to 20 mm., KP 345 in thicknesses up to 10 mm. without the use of additional hardening treatment.

Standards

Name	Code	Standards
Classification, nomenclature and General rules	В20	GOST 19281-89
Steel pipes and fittings to them	В62	GOST 20295-85, GOST 24950-81, HUNDRED 79814898 105-2008, TU 14-3-1270-84, TU 14-159-170-87, TU 14-159-263-96, TU 14-158-153-05, TU 1303-002-08620133-01, TU 14-158-146-2004, TU 14-3-1573-96, TU 14-3-620-77
Sheets and strips	В23	GOST 82-70, GOST 5520-79, GOST 17066-94, GOST 19903-74, GOST 19904-90, GOST 103-2006, GOST 19282-73, GOST 19903-90, TU 14-1-4632-93
Bars and shapes	В22	GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 9234-74, GOST 11474-76
Bars and shapes	В32	TU 14-1-1271-75, TU 14-136-367-2008
Sheets and strips	В33	TU 14-1-1921-76, TU 14-1-2584-79, TU 14-1-2917-80, TU 14-1-5241-93, TU 14-1-4431-88

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	N	As	Al	V	Ti	Nb	Ce
TU 14-1-1921-76	0.15-0.2	≤0.025	≤0.03	1-1.4	≤0.3	0.4-0.6	≤0.3	Rest	≤0.3	≤0.012	≤0.008	≤0.05	-	≤0.03	-	≤0.03
GOST 19282-73	0.14-0.2	≤0.04	≤0.035	1-1.4	≤0.3	0.4-0.6	≤0.3	Rest	≤0.3	≤0.008	≤0.08	≤0.05	-	≤0.03	-	-
GOST 17066-94	0.14-0.2	≤0.04	≤0.035	1-1.4	≤0.3	0.4-0.6	≤0.3	Rest	≤0.3	≤0.008	≤0.08	≤0.03	≤0.1	≤0.03	≤0.03	-
TU 14-158-146-2004	≤0.18	≤0.015	≤0.02	1-1.4	-	0.4-0.6	-	Rest	-	≤0.012	-	-	≤0.08	-	≤0.07	-
TU 14-3-1573-96	0.15-0.2	≤0.035	≤0.035	1-1.4	≤0.3	0.4-0.6	≤0.3	Rest	≤0.3	≤0.012	-	-	-	-	-	-

Fe is the basis.
According to TU 14-1-1921-76, instead of Ce, Ca≤0.020% can be introduced.
According to GOST 17066-94, the mass fraction of arsenic is allowed up to 0.015%, with the mass fraction of phosphorus being not more than 0.030%.
According to GOST 19282-73, it is allowed to modify steel with calcium and rare-earth elements from the calculation of the introduction of not more than 0.02% calcium and 0.05% rare-earth elements into the metal.
According to GOST 19281-89 and GOST 19282-73, it is allowed to add aluminum and titanium from the calculation of the mass fraction in the rolled aluminum - no more than 0.050%, titanium - no more than 0.030%.
According to GOST 5520-79, the mass fraction of arsenic can be up to 0.15% in the smelting of steel from the Kerch ore, while the mass fraction of phosphorus should not be more than 0.030%. At the request of the consumer, the mass fraction of sulfur should not exceed 0.025, 0.030 or 0.035%, and phosphorus 0.030 or 0.035%. When steel is smelted in electric furnaces, the mass fraction of nitrogen must be ≤ 0.012%.
According to TU 14-3-1573-96 carbon equivalent of Se ≤ 0.46%.
According to TU 14-158-146-2004 the chemical composition is shown for the ladle sample for the 1st level of quality of pipes made of steel of the grades 17GS, 17GS PL-1, 17GS PL-2. Niobium and vanadium are optional and are introduced into the steel by calculation with the manufacturer's agreement with the consumer.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	d₄	KCU, kJ/m²
Steel hot-rolled sheet in the delivery condition
2-3.9	-	≥510	≥19	-	-
5-9	≥350	≥520	≥23	-	-
Longitudinal electric-welded pipes TU 1303-002-08620133-01 in the delivery condition (in cross-section shows the thickness of the wall)
10-20	≥335	490-640	≥23	-	≥340
6-10	≥345	510-660	≥23	-	≥440
Rolled steel in the delivery state
≤41	-	≥520	≥23	-	-
Rolled plates as supplied by TU 14-1-5241-93. Quenching + Tempering (samples transverse)
10-50	≥325	≥450	≥21	-	-
8-10	≥345	≥490	≥23	-	-
Sheet 2-6, 10-12, 16, 18-22 categories, heat-treated, in the state of delivery GOST 5520-79
≤10	≥345	≥510	≥23	-	-
The plates and universal broadband in the state of delivery GOST 19282-73
≤10	≥345	≥510	≥23	-	-
Sheet 2-6, 10-12, 16, 18-22 categories, heat-treated, in the state of delivery GOST 5520-79
10-20	≥335	≥490	≥23	-	-
The plates and universal broadband in the state of delivery GOST 19282-73
10-20	≥335	≥490	≥23	-	-
Sheet metal in delivery condition on the other 14-1-4632-93 (samples transverse)
10-25	335-530	490-690	≥23	-	-
5-10	345-540	490-690	≥23	-	-
Hot rolled plates for gas pipes. In the delivery condition. Group strength K52
7-10	≥355	≥510	≥24	-	≥590
Sheets of thermo 2-6, 10-12, 16 and 18 categories in sostayanii delivery (transverse sample)
4-20	≥320	490-610	≥22	-	≥480
Pre-painted steel sheet of high-strength steel in the delivery state GOST 17066-94
0.5-3.9	≥355	≥510	-	≥18	-
0.5-3.9	≥355	≥480	-	≥18	-
Longitudinal electric-welded pipes of oil and gas as delivered at TU 14-3-1573-96 (samples transverse; column cross section - outer diameter; in the graph the value is KCU KCU-40 °C)
530, 630, 720, 820, 1020	≥350	≥510	≥20	-	≥294

Description mechanical marks

Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
d₄	Elongation after rupture
KCU	Toughness

Technological properties

Name	The value
Weldability	Welded without any restrictions.