Steel St3gps (ВСт3Гпс)

Designation

Name	The value
Name	The value
Designation GOST Cyrillic	Ст3Гпс
Designation GOST Latin	Ct3Gpc
Transliteration	St3Gps
By chemical elements	3Mn

Name	The value
Name	The value
Designation GOST Cyrillic	ВСт3Гпс
Designation GOST Latin	BCt3Gpc
Transliteration	VSt3Gps
By chemical elements	3Mn

Description

Steel St3gps used: for the manufacture of load-bearing elements of welded structures operating at variable loads at temperatures from -20 °C to +425 °C; the two-headed rails, t-type P5, is designed for ground and suspended tracks.

Note

The degree of deoxidation — PS.

Standards

Name	Code	Standards
Name	Code	Standards
Steel pipes and fittings to them	В62	GOST 3262-75, GOST 20295-85, GOST 24950-81, TU 14-3-1160-83, TU 14-3-1428-86
Tape	В24	GOST 3560-73, STP М309-74
Classification, nomenclature and General rules	В20	GOST 380-2005
Bars and shapes	В22	GOST 5422-73, GOST 5781-82, GOST 8239-89, GOST 8240-97, GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 8509-93, GOST 8510-86, GOST 9234-74, GOST 11474-76, GOST 19240-73, GOST 19425-74, GOST 535-2005, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006, OST 5.9086-85, OST 5.9087-84
Sheets and strips	В23	GOST 82-70, GOST 14637-89, GOST 14918-80, GOST 103-2006, TU 14-1-3023-80
Blanks. Of the workpiece. Slabs	В31	OST 3-1686-90, TU 14-1-4944-90
Welding and cutting metals. Soldering, riveting	В05	OST 36-58-81
Sheets and strips	В33	TU 14-1-4431-88
Bars and shapes	В32	TU 14-2-849-89, TU 14-11-245-88, TU 14-136-367-2008

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	N	As
Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	N	As
GOST 380-2005	0.14-0.22	≤0.05	≤0.04	0.8-1.1	≤0.3	≤0.15	≤0.3	Rest	≤0.3	≤0.012	≤0.08

Fe is the basis.
The nitrogen content is indicated for steel smelted in electric furnaces. In open-hearth and converter steels, the content of N≤0.010%.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²
Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²
The hot rolled plate, long products and fittings as supplied
10-20	≥245	370-490	≥26	-	≥980
20-40	≥235	370-490	≥25	-	≥980
40-100	≥225	370-490	≥23	-	-
100	≥205	370-490	≥23	-	-
Steel hot-rolled sheet with a thickness of 12-50 mm
-	225-390	410-570	26-39	58-68	-
-	215-390	-	-	-	-
-	215-360	-	-	-	-
-	195-265	-	-	-	-
-	175-245	300-400	-	65-76	-
Steel hot-rolled sheet with a thickness of 20 mm, strain aging at 350 °C (1000 h exposure)
-	≥370	≥510	≥22	≥78	-
-	≥320	≥470	≥22	≥63	-
-	≥320	≥510	≥18	≥58	-
-	≥275	≥440	≥22	≥65	-
-	≥245	≥340	≥25	≥78	-

Description mechanical marks

Name	Description
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
y	The relative narrowing
KCU	Toughness

Technological properties

Name	The value
Name	The value
Weldability	Welded without restriction; welding methods: SMAW, ADS submerged arc and gas protection electroslag welding and CCC. For thickness of more than 36 mm recommended heating and subsequent heat treatment is mandatory.
Склонность к отпускной хрупкости	tend not
The temperature of forging	Start - 1250 °C, the end - of 800 °C.
Flock-sensitive sensitivity	not sensitive
Machinability	In the hot rolled condition when blower SB 124 and HB=400 MPa Kn TV.SPL.=1.8 Kn b.St.=1.6