Steel 33KHS

Designation

Name The value
Designation GOST Cyrillic 33ХС
Designation GOST Latin 33XC
Transliteration 33HS
By chemical elements 33CrС

Description

33KHS steel is used: for the manufacture of improved parts spring type of relatively small cross-sections, which require high strength, durability and elasticity.

Note

Structural steel high-quality chromium-silicon.

Standards

Name Code Standards
Sheets and strips В23 GOST 103-2006
Bars and shapes В32 GOST 1051-73, GOST 4543-71, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, TU 14-1-2118-77, TU 14-11-245-88, TU 14-1-1271-75, TU 14-1-5228-93, TU 14-136-367-2008
Bars and shapes В22 GOST 1133-71, GOST 8319.0-75, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-4944-90

Mechanical properties

Section, mm t отпуска, °C sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2 HB, MPa
Quenching in water or oil from 920 °C to + leave at 630 °C, cooling in water or oil
≤25 - 690 880 13 50 780 -
Quenching in water from 910 °C to + vacation at 600-620 °C, cooling in water
≤80 - 720 900 16 50 580 262
Quenching in oil from 900 °C + vacation at 200-400 °C (exposure 2 hours), air cooling
- 200 1610 1750 10 48 863 510
Quenching in oil with 920-940 °C + vacation at 250-270 °C, air cooling
≤40 - - 1670 8 45 480 444-514
Quenching in water from 910 °C to + vacation at 600-620 °C, cooling in water
120-160 - 510 720 16 50 580 212
Quenching in oil from 900 °C + vacation at 200-400 °C (exposure 2 hours), air cooling
- 320 1490 1640 10 49 765 470
Normalizing at 920 °C, air cooling + vacation at 650-670 °C, air cooling
≤240 - 295 590 17 40 285 179
Quenching in water from 910 °C to + vacation at 600-620 °C, cooling in water
160-200 - 410 670 16 50 580 -
Quenching in oil from 900 °C + vacation at 200-400 °C (exposure 2 hours), air cooling
- 400 1340 1470 10 52 579 430
Quenching in water from 910 °C to + vacation at 600-620 °C, cooling in water
200-240 - 390 670 16 50 580 -
Quenching in oil from 900 °C + vacation at 520-600 °C (exposure 2 hours), cooling in water
- 520 1070 1180 14 59 863 350
Quenching in water from 910 °C to + vacation at 600-620 °C, cooling in water
80-120 - 650 840 16 50 580 -
Quenching in oil from 900 °C + vacation at 520-600 °C (exposure 2 hours), cooling in water
- 600 900 1110 18 63 1158 300
Quenching in oil from 910 °C to + vacation at 600-620 °C, cooling in water
≤30 - 780 940 12 50 580 285
30-50 - 670 860 12 50 580 255

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
y The relative narrowing
KCU Toughness
HB Brinell hardness number

Physical characteristics

Temperature Е, HPa G, HPa r, kg/m3 l, W/(m · °C) a, 10-6 1/°C С, J/(kg · °C)
0 214 84 7640 40 - -
20 214 - 7640 40 - -
100 206 80 - 38 12 466
200 196 76 - 37 128 508
300 186 73 - 37 134 529
400 176 69 - 35 137 563
500 168 65 - 33 143 592
600 157 61 - 31 147 622
700 137 53 - 29 15 634
800 127 49 - 27 15 634
1000 - - - - 124 664

A description of the physical symbols

Name Description
Е The normal elasticity modulus
G Modulus of elasticity shear torsion
r Density
l Coefficient of thermal conductivity
R UD. the resistivity

Technological properties

Name The value
Weldability difficult weldability. Welding methods: RDS - necessary heating and subsequent heat treatment. CCC - a necessary subsequent heat treatment.
Склонность к отпускной хрупкости inclined
The temperature of forging Start - 1200 °C, the end - 850 °C.
Flock-sensitive sensitivity not sensitive
Machinability if NV are 229-269 Kn TV.SPL.=0.7 Kn b.St.=0.4