Steel 85

Designation

Name The value
Designation GOST Cyrillic 85
Designation GOST Latin 85
Transliteration 85
By chemical elements 85

Description

85 steel is used: for the manufacture of springs, friction disks and other parts, which are requirements of high strength and elastic properties and wear resistance; blades of earth-moving machinery (bulldozers, scrapers, graders and graders, as well as to the dozer and grader blades equipment excavators, rollers and other earth moving machines); springs and measuring tapes.

Note

Steel spring carbon.

Standards

Name Code Standards
Bars and shapes В22 GOST 1133-71, GOST 17152-89, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Tape В34 GOST 2283-79
Steel wire medium and high carbon В72 GOST 7348-81, GOST 9389-75, GOST 26366-84
Bars and shapes В32 GOST 7417-75, GOST 7419-90, GOST 8559-75, GOST 8560-78, GOST 14955-77, GOST 14959-79, TU 14-1-2118-77, TU 14-11-245-88, TU 14-1-1271-75, TU 14-136-367-2008
Sheets and strips В23 GOST 82-70, GOST 103-2006
Sheets and strips В33 TU 14-1-1022-74, TU 14-1-1133-74, TU 14-1-2650-79, TU 14-1-466-72

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
GOST 17152-89 (ИСО 7129-82 0.82-0.9 ≤0.035 ≤0.035 0.5-0.8 ≤0.25 0.17-0.37 ≤0.25 Rest ≤0.2
GOST 14959-79 0.82-0.9 ≤0.035 ≤0.035 0.5-0.8 ≤0.25 0.17-0.37 ≤0.25 Rest ≤0.2
Fe is the basis.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % d4 y, % HB, MPa HRC
Cold-rolled steel strip of 0.1-4.0 mm according to GOST 2283-79 on delivery
0.1-4 - 740-1180 - - - - -
0.1-4 - ≤740 - ≥10 - - -
0.1-4 - ≤670 - ≥10 - - -
Tape. Quenching in water from 1000 °C + Quenching in water from 870 °C to + Vacation at 250 °C
≤1 ≥1650 ≥1750 - ≥9 - - 47
Wire. Quenching in oil from 920 °C (tмасла=40 °C, exposure for 1 min) + Vacation at 500 °C (15 min excerpt) air cooling
≤6.5 - ≥1540 ≥5 - ≥42 399 -
Rolled steel. Steel categories: 3, 3A, 3B, 3C, 3D, 4, 4A, 4B. Quenching in oil from 820 °C to + Vacation at 470 °C
≥980 ≥1130 ≥8 - ≥30 - -

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU Limit short-term strength
d5 Elongation after rupture
d4 Elongation after rupture
y The relative narrowing
HB Brinell hardness number
HRC Rockwell hardness (indenter diamond spheroconical)

Physical characteristics

Temperature Е, HPa G, HPa
0 191 76

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 does not apply to welded structures.
Склонность к отпускной хрупкости tend not
The temperature of forging Start - 1180 °C, the end - of 800 °C. the cross Section up to 220 mm are cooled in the wells.
Flock-sensitive sensitivity insensitive