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Steel 45

Designation

Name The value
Designation GOST Cyrillic 45
Designation GOST Latin 45
Transliteration 45
The chemical elements 45

Description

45 steel is used: for the manufacture of shaft-gear, crankshaft and camshafts, gears, spindles, tires, cylinders, Cams, and other normalized, and improve poverhnosti subjected to the heat treatment of the part that requires increased durability; shaft, extension shaft and disc thrust bearings for hydro generators; parts of pipeline valves after quenching and tempering; seamless tubes for the manufacture of parts and structures in motovelotehnika; solid-rolled rings for different purposes; the wire used for the manufacture of spokes of motorcycles and bicycles; remisol heat-treated tin-plated wire, designed for the manufacture of galev to reminyl devices looms.

Note

The degree of deoxidation — SP.

Standards

Name Code Standards
Sectional and shaped rolling В32 GOST 1050-88, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 10702-78, GOST 14955-77, GOST 1050-2013, OST 1 92049-76, TU 14-1-5414-2001, TU 3-168-82, TU 14-1-2118-77, TU 14-1-2330-77, TU 14-1-2898-80, TU 14-1-3651-83, TU 14-1-4049-85, TU 14-1-495-73, TU 14-178-181-89, TU 14-11-245-88, TU 14-1-2381-78, TU 14-1-1271-75, TU 14-136-367-2008
Sheets and stripes В33 GOST 1577-93, TU 14-1-197-72, TU 14-125-661-93, TU 14-1-2579-78, TU 14-132-181-90, TU 14-1-4219-87, TU 14-1-4516-88, TU 14-1-5036-91, TU 14-2-268-77, TU 114-125-661-93
Tapes В34 GOST 2284-79, TU 14-4-527-74
Steel wire medium- and high-carbon В72 GOST 3110-74, GOST 3920-70, GOST 7372-79, GOST 9161-85, GOST 9389-75, GOST 9850-72, GOST 17305-91, GOST 26366-84
Pipes steel and connecting parts to them В62 GOST 3262-75, GOST 8639-82, GOST 8642-68, GOST 8644-68, GOST 8645-68, GOST 8646-68, GOST 8732-78, GOST 8734-75, GOST 9567-75, GOST 12132-66, GOST 13663-86, GOST 20295-85, GOST 21729-76, GOST 23270-89, GOST 24950-81, GOST 8733-87, GOST 8731-87, GOST 13664-68, GOST Р 53383-2009, TU 14-3-1428-86, TU 14-3-1444-86, TU 14-3-1473-87, TU 14-3-675-78, TU 14-3-463-2005, TU 14-3-473-76, TU 14-159-246-94, TU 14-3Р-51-2001, TU 14-3Р-50-2001, TU 14-3-1654-89
Tapes В24 GOST 3560-73
Sectional and shaped rolling В22 GOST 5422-73, GOST 8239-89, GOST 8240-97, GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 8319.0-75, GOST 8319.2-75, GOST 8319.5-75, GOST 8319.6-75, GOST 8319.8-75, GOST 8319.11-75, GOST 8319.12-75, GOST 8320.0-83, GOST 8509-93, GOST 8510-86, GOST 9234-74, GOST 11474-76, GOST 12492.8-90, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006, OST 5.9087-84, TU 14-1-788-73
Low-carbon steel wire В71 GOST 5663-79
Sheets and stripes В23 GOST 82-70, GOST 14918-80, GOST 16523-97, GOST 19903-74, GOST 16523-89, GOST 16523-70, GOST 103-2006, GOST 19903-90, TU 14-1-1934-76, TU 14-1-4632-93
Metal forming. Forgings В03 GOST 8479-70, OST 5Р.9125-84, TU 108-11-910-87, TU 108.11.399-87, ST ЦКБА 010-2004
Bulls. Blanks. Slabs В31 OST 3-1686-90, TU 108.11.890-87, TU 14-1-4944-90, TU 14-1-4992-91, TU 1-92-156-90
Thermal and thermochemical treatment of metals В04 ST ЦКБА 026-2005

Mechanical characteristics

Section, mm t отпуска, °C sT|s0,2, MPa σB, MPa d5, % d4 d y, % kJ/m2, кДж/м2 Brinell hardness number, MPa
Wire for cold heading as supplied by GOST 5663-79
- - - 560-710 - - - ≥55 - -
- - - ≤740 - - - ≥40 - -
Hot-rolled steel and hot rolled with special surface finish
- - - - - - - - - ≤229
- - - - - - - - - ≤170
Steel calibrated and calibrated with special surface finish
- - - - - - - - - ≤241
- - - ≤590 - - - ≥40 - ≤207
Tubes seamless cold - and hot-deformed in the delivery condition heat-treated (NV - wall > 10 mm)
- ≥323 ≥588 ≥14 - - - - ≤207
Cold-rolled steel strip of 0.1-4.0 mm in the delivery state according to GOST 2284-79
- - - 690-1030 - - - - - -
- - - 440-690 - ≥14 - - - -
- - - 440-600 - ≥14 - - - -
Ring forged in OST 1 92049-76. Normalization
25 - ≥335 ≥570 ≥12 - - ≥32 ≥363 -
Pipe seamless cold drawn, cold rolled and toplocatie, heat-treated in the delivery condition according to GOST 21729-76
- - ≥588 ≥14 - - - - -
Forgings. Hardening + Vacation
300-500 - ≥275 ≥530 ≥15 - - ≥29 - 156-197
Forgings. Normalization
100-300 - ≥245 ≥470 ≥19 - - ≥42 - 143-179
300-500 - ≥245 ≥470 ≥17 - - ≥35 - 143-179
500-800 - ≥245 ≥470 ≥15 - - ≥30 - 143-179
100-300 - ≥275 ≥530 ≥17 - - ≥34 - 156-197
100 - ≥275 ≥530 ≥20 - - ≥44 - 156-197
Hot-rolled sheet in the delivery condition. Group strength К490В
≤2 - - 490-720 - ≥12 - - - -
2-3.9 - - 490-720 - ≥13 - - - -
Cold-rolled sheet in the delivery condition. Group strength К490В
≤2 - - 490-720 - ≥13 - - - -
2-3.9 - - 490-720 - ≥14 - - - -
Without heat treatment - delivery condition
≤80 - - ≥590 ≥18 - - - - -
6-25 - - ≥600 ≥16 - - ≥40 - -
Procurement of parts of pipeline fittings from rolled and stamped. Quenching in water from 830-860 °C (exposure for 2.5-4.0 hours depending on the thickness and weight of the workpiece) with the subsequent vacation
120 560-600 ≥440 ≥676 ≥17 - - ≥40 ≥481 197-235
40 350-400 ≥785 ≥930 ≥12 - - ≥40 ≥481 293-331
50 540-560 ≥540 ≥785 ≥10 - - ≥40 ≥481 223-262
Bars grooved and g/K. Without heat treatment - as supplied
≤60 - ≥315 590-830 ≥13 - - ≥40 - ≤170
Tubes profile hot - and cold-rolling or heat-treated after heating as supplied according to GOST 13663-86
- ≥323 ≥549 ≥14 - - - - -
Rolled steel. Hardening in water from 850 °C + Vacation at 550 °C. the Samples were cut out from the center of the workpiece
15-30 - ≥540 ≥730 ≥15 - - ≥45 ≥765 -
30-75 - ≥440 ≥690 ≥14 - - ≥40 ≥579 -
75-100 - ≥440 ≥690 ≥13 - - ≥40 ≥481 -
15 - ≥640 ≥780 ≥16 - - ≥50 ≥961 -
Steel, hot-rolled, forged, calibrated and silverfish 2nd category. Normalization
≤25 - - ≥600 ≥16 - - ≥40 - -
Steel grooved 5 category nagarebana
- - - ≥640 ≥6 - - ≥30 - -
Forgings. Normalization at 840-860 °C
- - ≥355 ≥600 ≥16 - - ≥40 ≥490 187-229
Forgings. Normalizing + tempering + vacation
100-300 - ≥315 ≥570 ≥14 - - ≥34 - 167-207
300-500 - ≥315 ≥570 ≥12 - - ≥29 - 167-207
100 - ≥315 ≥570 ≥17 - - ≥39 - 167-207
100-300 - ≥345 ≥590 ≥17 - - ≥54 - 174-217
100 - ≥345 ≥590 ≥18 - - ≥59 - 174-217
100 - ≥395 ≥620 ≥17 - - ≥59 - 187-229
Workpiece diameter 60 mm. Quenching in water 840 °C + Vacation
- 400 520-590 730-840 12-14 - - 46-50 - 202-234
- 500 470-520 680-770 14-16 - - 52-58 - 185-210
- 600 410-440 610-680 18-20 - - 61-64 - 168-190
Samples with a diameter of 15 mm. Quenching in water from 850 °C + Vacation
- 450 ≥830 ≥980 ≥10 - - ≥40 - -
- 500 ≥730 ≥830 ≥12 - - ≥45 - -
- 550 ≥640 ≥780 ≥16 - - ≥50 - -
- 600 ≥590 ≥730 ≥25 - - ≥55 - -
A sample with a diameter of 6 mm and a length of 30 mm, forged and normalized. The rate of deformation of 16 mm/min strain Rate of 0.009 1/s
- - ≥140 ≥170 ≥43 - - ≥96 - -
- - ≥64 ≥110 ≥58 - - ≥98 - -
- - ≥54 ≥76 ≥62 - - ≥100 - -
- - ≥34 ≥50 ≥72 - - ≥100 - -
- - ≥22 ≥34 ≥81 - - ≥100 - -
- - ≥15 ≥27 ≥90 - - ≥100 - -
Rolled steel. Normalization
- - ≥340 ≥690 - - ≥10 ≥36 - -
- - ≥255 ≥710 - - ≥22 ≥44 - -
- - ≥225 ≥560 - - ≥21 ≥65 - -
- - ≥175 ≥370 - - ≥23 ≥67 - -
- - ≥78 ≥215 - - ≥33 ≥90 - -

Description mechanical marks

Name Description
Section Section
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d5 Elongation after rupture
d4 Elongation after rupture
d Elongation after rupture
y The relative narrowing
kJ/m2 Toughness

Physical characteristics

Temperature Е, ГПа G, ГПа r, кг/м3 l, Вт/(м · °С) a, 10-6 1/°С С, Дж/(кг · °С)
20 200 78 7826 - - -
100 201 - 7799 48 119 473
200 193 - 7769 47 127 498
300 190 69 7735 44 134 515
400 172 - 7698 41 141 536
500 - 59 7662 39 146 583
600 - - 7625 36 149 578
700 - - 7587 31 149 611
800 - - 7595 27 - 720
900 - - - 26 152 720
1100 - - - - - 708

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
a The coefficient of linear expansion
С Specific heat

Technological properties

Name The value
Weldability Difficult weldability. Welding methods: RDS and CBS. Necessary preheating and subsequent heat treatment.
Propensity to temper brittleness Tend not.
Forging temperature Start - 1250 °C, end - 700 °C. the cross Sections up to 400 mm are cooled in air.
Flock-sensitive sensitivity Insensitive.
Workability by cutting In hot rolled state at NV 170-179 and blower SB=640 MPa Kn TV.SPL.=1,0 Kn b.St.=1,0.
Surfacing Surfacing of sealing surfaces of valves in accordance with OST 26-07-2028-81 is made by manual arc welding electrodes type e-20X13 with plaster SSSI-13НЖ, NII-48, NII-48Ж-1 or SV wire-12H13 or SV-20X13. Surface preparation for overlay welding is performed by machining. Surfacing is performed with preliminary and accompanying heating to 400-450 °C is not less than 3 layers with thickness not less than 4 mm, excluding allowance for machining. Heat treatment after welding is produced by tempering at 550-600 °C (delay of 2-5 h) hardness HB=301-350, at 600-650 °C (delay of 2-5 h) hardness HB=240 to 300, at 400-450 °C (delay of 2-5 h) hardness HB=351-400. The temperature of the furnace when loading the details for the home should be no more than 300 °C.

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