Steel St0

Designation

Name The value
Designation GOST Cyrillic Ст0
Designation GOST Latin Ct0
Transliteration St0
By chemical elements -

Description

St0 steel is used: for the manufacture of secondary and minor elements of structures and components (decking, construction valves non-critical purposes, linings, washers, railings, casings, linings; hot-rolled steel sheets with one-sided rhombic and lenticular corrugated); two-headed rails, t-type P5, is designed for ground and suspended tracks.

Standards

Name Code Standards
Steel pipes and fittings to them В62 GOST 3262-75, TU 14-3-1160-83, TU 14-3-1428-86
Low carbon steel wire В71 GOST 3282-74
Tape В24 GOST 3560-73, GOST 6009-74, 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 9234-74, GOST 10551-75, GOST 11474-76, GOST 19240-73, GOST 19425-74, GOST 19771-93, GOST 19772-93, GOST 30565-98, GOST 535-2005, GOST 30136-95, GOST 2590-2006, GOST 2591-2006, OST 5.9086-85, OST 5.9087-84, TU 14-2-341-78, TU 14-1-5283-94
Sheets and strips В23 GOST 82-70, GOST 8568-77, GOST 14637-89, GOST 14918-80, GOST 16523-97, GOST 19903-74, GOST 16523-89, GOST 16523-70, GOST 103-2006, GOST 19903-90, STP М324-90
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-4944-90
Sheets and strips В33 TU 14-1-4431-88
Bars and shapes В32 TU 14-11-245-88, TU 14-136-367-2008

Chemical composition

Standard C S P Fe N
GOST 380-2005 ≤0.23 ≤0.06 ≤0.07 Rest ≤0.012
Fe is the basis.

Mechanical properties

Section, mm σU, MPa d5, % d4
The hot rolled shapes in the state of delivery
≤20 ≥300 ≥18 -
20-40 ≥300 ≥18 -
40 ≥300 ≥15 -
Hot-rolled plate in the delivery condition
≤20 ≥300 ≥23 -
≥40 ≥300 ≥20 -
20-40 ≥300 ≥22 -
Sheets hot rolled as supplied
2-3.9 ≥300 - ≥13
2 ≥300 - ≥11
The cold-rolled sheets in the delivery condition
2-3.9 ≥300 - ≥16
2 ≥300 - ≥14

Description mechanical marks

Name Description
σU Limit short-term strength
d5 Elongation after rupture
d4 Elongation after rupture

Technological properties

Name The value
Weldability Welded without restriction; welding methods: RDS, ADS, submerged arc and gas protection electroslag welding and CCC.
Склонность к отпускной хрупкости tend not
The temperature of forging Beginning - 1300 °C, end - 700 °C.
Flock-sensitive sensitivity not sensitive
Machinability In hot rolled state at NV 103-107 and blower SB=460 MPa Kn TV.SPL.=2.1 Kn b.St.=1.65