Steel 08

Designation

Name	The value
Designation GOST Cyrillic	08
Designation GOST Latin	08
Transliteration	08
By chemical elements	08

Description

08 steel is used: for the manufacture of parts, which are requirements of high plasticity: washers, pipes, gaskets and other parts non-critical purposes, in the temperature range from -40 °C to 450 °C; electrically welded tubes; welded pipes for the manufacture of parts and structures in motovelotehnika; rolled sheet 1−2 mm 4−14 category, intended for cold forming; cold strip 0,05−4,00 mm, designed for bending, punching parts, making pipe; flux cored wire; parts of bearings and other metal products; details of enameled chemical equipment.

Note

The degree of deoxidation — SP.

Standards

Name	Code	Standards
Bars and shapes	В32	GOST 1050-88, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 10702-78, GOST 14955-77, TU 14-1-2118-77, TU 14-11-245-88, TU 14-136-367-2008
Sheets and strips	В33	GOST 1577-93, GOST 4041-71, TU 14-1-253-72, TU 14-1-3172-81, TU 14-1-3579-83, TU 14-1-4516-88, TU 14-1-4674-89
Steel pipes and fittings to them	В62	GOST 3262-75, GOST 6856-54, GOST 10704-91, GOST 10705-80, GOST 10707-80, GOST 12132-66, GOST 14162-79, GOST 20295-85, GOST 24950-81, TU 14-3-1428-86, TU 14-3Р-63-2002, TU 1373-022-05757850-08, TU 1373-013-02949352-2003
Tape	В24	GOST 3560-73
Steel wire medium and high carbon	В72	GOST 3920-70, GOST 7372-79, GOST 9389-75, GOST 9850-72, GOST 26366-84
Tape	В34	GOST 503-81, GOST 10234-77, GOST 19851-74
Low carbon steel wire	В71	GOST 5663-79
Sheets and strips	В23	GOST 82-70, GOST 14918-80, GOST 16523-97, GOST 16523-89, GOST 16523-70, GOST 103-2006, GOST 19903-90, TU 14-1-4632-93
Bars and shapes	В22	GOST 8239-89, GOST 8240-97, GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 8319.0-75, GOST 8509-93, GOST 8510-86, GOST 9234-74, GOST 10551-75, GOST 11474-76, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006, OST 5.9087-84
Blanks. Of the workpiece. Slabs	В31	OST 3-1686-90, TU 14-1-4944-90, TU 14-1-3129-81
Test methods. Packing. Marking	В29	TU 14-106-485-99
Welding and cutting metals. Soldering, riveting	В05	TU 14-4-133-73, TU 14-4-1445-87, TU 14-4-828-77, TU 14-4-898-78, TU 14-4-134-73

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	d₄	y, %
Tape flatted average strength of 0.1-4.0 mm according to GOST 10234-77 in the state of delivery (indicated delivery)
-	-	690-830	-	-	-
Cold-rolled steel strip 0,05-4,00 mm according to GOST 503-81 on delivery
≤1.5	-	310-440	-	≥17	-
Hot rolled steel
-	≥175	≥315	≥20	-	≥77
-	≥205	≥390	≥16	-	≥65
-	≥98	≥370	≥24	-	≥67
-	≥88	≥275	≥31	-	≥77
-	≥78	≥195	≥33	-	≥78

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
y	The relative narrowing

Physical characteristics

Temperature	Е, HPa	r, kg/m³	l, W/(m · °C)	R, Mr. · m	a, 10^-6 1/°C	С, J/(kg · °C)
100	207	7846	60	178	125	482
800	-	7598	30	1073	147	695

A description of the physical symbols

Name	Description
Е	The normal elasticity modulus
r	Density
l	Coefficient of thermal conductivity
R	UD. the resistivity
a	The coefficient of linear expansion

Technological properties

Name	The value
Weldability	Welded without restriction, except for the parts after chemical and heat treatment; welding methods: SMAW, ADS submerged arc and gas protection, the CCC.
Склонность к отпускной хрупкости	Tend not.
The temperature of forging	Start - 1250 °C, end - 800 °C. of the Workpiece cross-section up to 300 mm are cooled in air.
Flock-sensitive sensitivity	not sensitive.
Machinability	In the hot rolled condition when blower SB 131 and HB=315-410 MPa Kn TV.SPL.=Of 2.1 Kn b.St.=Of 1.65.