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Steel 35G2

VSt6ps VSt5sp VSt3kp VSt4kp VSt6sp VSt2kp Vst4ps St0 VSt2ps VSt3ps VSt5ps VSt2sp VSt3sp 18К 08ps 10ps 15К 18kp 20ps 35 55 05kp 08Ю 15kp 20 (20А) 22К 40 58 (55ПП) 08 10 (Art. 10) 12К 15pc 20К 25 45 60 08kp 10kp 15 16К 20kp 30 50 0cB 60С2 60C2XA 50XFA 60C2A 60C2CHFA 65C2VA 85 55XGR 65 70C3A 55С2 60Г 60C2H2A 65Г 70 75 SHKH15 SHKH15SG SH4 А12 А20 A40G А30 10XNDP 14G2AF 15G2AFDps 17GS 18G2AFps 09Г2 10G2BD 10ХСНД 12GS 15G2SFD 16GS 35GS 14CGS 15ХСНД 20ХГ2Ц 09G2S 10G2S1 14Г2 16G2AF 17G1S 25G2S 10Г2 14X2GMR 15KHF 18CR2N4MA 20Г 20X2H4A 20XGR 20KHN2M (20KHNM) 30Г 30CGS 30CRNI2MA 34CRNI3M 35Х 38CR2N3M 38XA 38CMA 3CR3M3F 40Х 40XFA 45CRN 50Г2 12XH2 15Х 20KHGSA 20XHN3A 25CGSA 30KHGSA 30CRNI2MOVA 33HS 35KHN1M2FA 38CR2NM 40Г 40CR2H2MA 40CRN 45Г 45CRNI2MOVA 50Х 12XH2A 18CGT 20CRNR 20CRNI4FA 25CGT 30Х 30CGSN2A 30KHN3A 34CRNI1M 35Г 36CR2NI2MOVA 38KH2NMF 38CRN 38CRNI3MA 40Г2 40CRNI2MA 45Г2 47GT 50XH 12CR2N4A 12XHN3A 15Г 18CR2N4VA 20Х 20XH 20XNR 30CGT 30ХН3М2ФА 35Г2 35CGSA 38CR2H2MA 38CRNI3MOVA 40HS 45Х 50Г

Description

Steel 35G2

Steel 35G2: a brand of steels and alloys. Below is a systematized information on the purpose, chemical composition, types of supplies, substitutes, temperature of critical points, physical, mechanical, technological and casting properties for the grade — Steel 35G2.

General information about steel 35G2

Substitute brand
steel 40X
Delivery type
long products, including shaped: GOST 4543−71, GOST 2590−71, GOST 2591−71, GOST 2879−69, GOST 10702−78. Calibrated bar GOST 4543−71, GOST 7417−75, GOST 8559−75, GOST 8560−78, GOST 10702−78. Polished bar and silver bar GOST 4543−71, GOST 14955−77. Thick sheet GOST 1577−81, GOST 19903−74. Strip GOST 103−76, GOST 82−70. Forgings and forged billets GOST 1133−71, GOST 4543−71, GOST 8479−70.
Application
shafts, axle shafts, trunnions, clutch levers, forks, flanges, crankshafts, connecting rods, bolts, rings, casings, gears and other parts used in various fields of mechanical engineering, which are subject to increased wear resistance requirements.

The chemical composition of steel 35G2

Chemical element %
Silicon (Si) 0.17−0.37
Manganese (Mn) 1.40−1.80
Copper (Cu), no more 0.30
Nickel (Ni), no more 0.30
Sulfur (S), no more 0.035
Carbon (C) 0.31−0.39
Phosphorus (P), no more 0.035
Chromium (Cr), no more 0.30

Mechanical properties of 35G2 steel

Mechanical properties

Heat treatment, delivery condition Section, mm σ 0.2, MPa σ B, MPa δ 5 ,% ψ,% KCU, J / m 2 HB
Bar. Hardening 870 ° С, oil. Vacation 650 ° C, air. 25 365 620 eighteen 40    
Forgings. Normalization 860 ° C, air. KP 275. 100−300 275 530 17 38 34 156−197
Normalization 840−870 ° C, air. Vacation 600−650 ° С, air. 100−300 295 580 eighteen 43 29 183−241
Annealing: heating up to 775 ° C at a rate of 250 deg / h, holding, cooling with a furnace at a speed of 40 deg / h.   380 670 23 57 48 179

Mechanical properties at elevated temperatures

test t, ° C σ 0.2, MPa σ B, MPa δ 5 ,%
Normalization 870 ° C, air.
200 265 570 fourteen
300 235 580 sixteen
400 215 490 23

Mechanical properties depending on the tempering temperature

vacation t, ° С σ 0.2, MPa δ 5 ,% ψ,% KCU, J / m 2 HB
A bar with a section of 25 mm. Hardening 830 ° С, oil. Cooling after tempering in oil.
375   nine 44 ten 402
450 950 12 55 29 321
525 880 fourteen 60 39 286
600 670 eighteen 65 88 241

Mechanical properties depending on the section

Heat treatment, delivery condition Section, mm σ 0.2, MPa σ B, MPa δ 10 ,% ψ,% KCU, J / m 2 HB
Hardening 820 ° C, water. Vacation 600 ° C, water.
Sample cutting location — center 50 590 700 eighteen 57 680 220
Sample cutting location — center 75 540 730 eighteen 54 59 210
Sample cutting location — edge 75   820 sixteen 60 67 242
Sample cutting location — center 100 490 720 eighteen 56 29 210
Sample cutting location — edge 100 660 800 sixteen 60 41 241

Technological properties of 35G2 steel

Forging temperature
The beginning is 1200, the end is 800.
Weldability
RDS, heating and subsequent heat treatment is required, KTS, subsequent heat treatment is required.
Machinability by cutting
at HB 156−207 K υ tv.spl. = 0.85, K υ b.st. = 0.65.
Tendency to release ability
inclined
Flock sensitivity
sensitive

Temperature of critical points of steel 35G2

Critical point ° C
Ac1 718
Ac3 804
Ar3 727
Ar1 677
Mn 340

Impact toughness of 35G2 steel

Impact strength, KCU, J / cm 2

Delivery status, heat treatment -20 -40 -60
Tempering 880 C, oil. Vacation 540 C. 49−69 39−59 24−59

Endurance limit of 35G2 steel

σ -1, MPa σ B, MPa σ 0.2, MPa Heat treatment, steel condition
358 850 690 Tempering 880 C, oil. Vacation 600 С
372 710 560 Tempering 880 C, oil. Vacation 650 С
343 720 590 Tempering 880 C, oil. Vacation 690 С
353 630 500 Tempering 880 C, oil. Vacation 720 S.

Hardenability of steel 35G2

Hardening 840 C. Hardness for strips of hardenability HRCe.

Distance from the end, mm / HRC e
2 five ten fifteen 20 25 thirty 35 40 45
51.5−59 46.5−57 34−52.5 28−46.5 25−42 23−39 23−39 35 33 32.5
Amount of martensite,% Crit. Diam. in water, mm Crit. Diam. in oil, mm Crete. hardness, HRCэ
50 43−82 20−52 41−43
90 28−60 9−34 47−50

Physical properties of steel 35G2

Test temperature, ° С 20 100 200 300 400 500 600 700 800 900
Normal elastic modulus, E, GPa 204                  
Density of steel, pn, kg / m 3 7790                  
Thermal conductivity coefficient W / (m ° С)   40 38 37 36 35        

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