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Steel 60S2

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 60S2

Steel 60S2: 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 60S2.

General information of steel 60S2

Substitute brand
steel: 55S2, 50HFA.
Delivery type
Wire 60s2, circle 60s2, long products, including shaped: GOST 14959−79, GOST 2590−71, GOST 2591−71, GOST 2879−69, GOST 7419.0−78 — GOST 7419.8−78. Calibrated bar GOST 7417−75, GOST 8559−75, GOST 8560−78, GOST 1051−73. Polished bar and silver bar GOST 14955−77, GOST 7419.0−78 — GOST 7419.8−78. Tape GOST 2283−79. Strip GOST 103−76, GOST 4405−75. Forgings and forged billets GOST 1133−71.
Application
Thyzhelo-loaded springs, torsion shafts, spring rings, collets, friction discs, spring washers.

Chemical composition of steel 60S2

Chemical element %
Silicon (Si) 1.5−2.0
Manganese (Mn) 0.60−0.90
Copper (Cu), no more 0.20
Nickel (Ni), no more 0.25
Sulfur (S), no more 0.035
Carbon (C) 0.57−0.65
Phosphorus (P), no more 0.035
Chromium (Cr), no more 0.30

Mechanical properties of steel 60S2

Mechanical properties

Heat treatment, delivery condition Section, mm σ 0.2, MPa σ B, MPa δ 5 ,% ψ,% HB
Steel categories: 3.3A, 3B, 3V, 3G, 4.4A, 4B. Hardening 870 ° С, oil, tempering 470 ° С. Samples 1175 1270 6 25  
Isothermal seal 860−880 ° С, molten salt 310−330 ° С. Vacation 310−330 ° С, air. ten 1590 1760 12 50  
Springs. Winding at 850−870 ° C, oil. Vacation 430−460 ° С, air.           388−477
Springs. Hardening 850−870 ° С, oil. Vacation 400−450 ° C, air.           387−418

Mechanical properties at elevated temperatures

test t, ° C σ 0.2, MPa σ B, MPa δ 5 ,% ψ,% KCU, J / m 2
Workpiece with a diameter of 17 mm. Hardening 860 ° C, oil. Vacation 550 ° C.
20 1100 1270 11−13 33 24
300 930 1220 fifteen 44 43
400 820 950 19 71 44
500 510 590 23 87 43
Samples 10 mm in diameter, 50 mm long after rolling. Deformation rate 20 mm / min. Strain rate 0.007 1 / s.
800 83 97 66 97  
900 55 67 62 96  
1000 35 42 61 100  
1100 20 26 78 100  
1200 12 fifteen 90 100  
Hardening 860 ° C, oil. Vacation 425 ° C, air.
200 1370 1670 ten 40  
300 1220 1550 20 55  
400 1080 1270 25 75  

Mechanical properties depending on the tempering temperature

vacation t, ° С σ B, MPa δ 5 ,% ψ,% KCU, J / m 2 HB
Hardening 850 ° С, oil. Vacation
300   five 27 20 465
400 1680 7 34 20 425
500 1300 ten 42 23 345
600 1030 17 48   295

Technological properties of steel 60S2

Forging temperature
Beginning 1200, end 800. Cooling of workpieces with a section up to 250 mm in air, 251−300 mm — in a pit.
Weldability
not applicable for welded structures.
Machinability by cutting
In the hot-rolled state at HB 270−320 and σ B = 1080 MPa K υ tv.spl. = 0.70, K υ b.st. = 0.27.
Tendency to release ability
not inclined
Flock sensitivity
not sensitive

Temperature of critical points of steel 60S2

Critical point ° C
Ac1 770
Ac3 820
Ar3 770
Ar1 700
Mn 305

Impact strength of steel 60S2

Impact strength, KCU, J / cm 2

Delivery status, heat treatment +20 -thirty -60
Guenching 860 C, oil. Vacation 425 S. 37 thirty 27

Endurance limit of steel 60S2

σ -1, MPa τ -1, MPa n σ B, MPa σ 0.2, MPa Heat treatment, steel condition
490 294   1380   Guenching 860 C, oil. Vacation 400−550 C.
421     1580 1370  
328   5E + 6     Hardening. Vacation 470−480 С.

Hardenability of steel 60S2

Hardening 850 ° C.

Distance from the end, mm / HRC e
1.5 3 4.5 6 nine 12 fifteen eighteen 27 39
60−67 59−67 57−66 54−65 44.5−63 38.5−60 35.5−56 34−52.5 30−43.5 27−30.5
Amount of martensite,% Crit. Diam. in water, mm Crit. Diam. in oil, mm Crete. hardness, HRCэ
50 47−82 24−53 52−53
90 60 36 58−60

Physical properties of steel 60S2

Test temperature, ° С 20 100 200 300 400 500 600 700 800 900
Normal elastic modulus, E, GPa 212 206 198 192 181 178 158 144 134  
Torsional shear elastic modulus G, GPa 82 80 77 74 69 68 60 54 50  
Density of steel, pn, kg / m 3 7680 7660 7630 7590 7570 7520        
Thermal conductivity coefficient W / (m ° С) 28 29 29 thirty thirty thirty 29 29 28  
Test temperature, ° С 20−100 20−200 20−300 20−400 20−500 20−600 20−700 20−800 20−900 20−1000
Linear expansion coefficient (a, 10−6 1 / ° С) 11.8 12.7 13.3 13.7 14.1 14.5 14.4 12.2    
Specific heat (C, J / (kg ° C)) 510 510 520 535 565 585 620 700    

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