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Steel 10 (st 10)

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 10 (st 10)

Steel 10 (article 10): 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 10 (Art 10).

General information steel 10 (st 10)

Substitute brand
steel: 08, 15, 08kp
Delivery type
Circle 10, sheet 10, long products, including shaped: GOST 1050−74, GOST 2590−71, GOST 2591−71, GOST 2879−69, GOST 8509−86, GOST 8510−86, GOST 8240−72, GOST 8239−72. Calibrated bar GOST 10702−78, GOST 7417−75, GOST 8559−75, GOST 8560−78. Polished bar and silver bar GOST 10702−78, GOST 14955−77. Thick sheet GOST 1577−81, GOST 19903−74. Thin sheet GOST 16523−70. Tape GOST 6009−74, GOST 10234−77. Strip GOST 1577−81, GOST 103−76, GOST 82−70. Wire GOST 17305−71, GOST 5663−79. Pipes GOST 8731−87, GOST 8732−78, GOST 8733−87, GOST 8734−74, GOST 10705−80, GOST 10704−91, GOST 1060−83, GOST 5654−86, GOST 550−75.
Application
Parts operating at temperatures from -40 to 450 ° C, which are subject to high plasticity requirements, after chemical-thermal treatment — parts with high surface hardness and low core strength.

Chemical composition of steel 10 (st 10)

Chemical element %
Silicon (Si) 0.17−0.37
Manganese (Mn) 0.35−0.65
Copper (Cu), no more 0.25
Arsenic (As), no more 0.08
Nickel (Ni), no more 0.25
Sulfur (S), no more 0.04
Carbon (C) 0.07−0.14
Phosphorus (P), no more 0.035
Chromium (Cr), no more 0.15

Mechanical properties of steel 10 (st 10)

Heat treatment, delivery condition σ B, MPa δ 5 ,% δ 4 ,% ψ,% HB HRC e
Hot-rolled steel, forged calibrated and silver grade 2 after normalization 335 31   55    
Calibrated and calibrated steel with special finishing: after annealing or tempering 335−450     55 143  
Steel calibrated and calibrated with special finishing: after spheroidizing annealing 315−410     55 143  
Calibrated and calibrated steel with special finishing: work-hardened without heat treatment 390 8   50 187  
Normalized or hot rolled strips 335 31   55    
Hot rolled sheet 295−410   24      
Cold rolled sheet 295−410   25      
Heat-treated sheet of the 1st-2nd category 295−420 32     117  
Hot-deformed heat-treated pipes 355 24     137  
Cold and heat-deformed heat-treated pipes 345 24     137  
Cementation 920−950 ° C. Hardening 790−810 ° С, water. Vacation 180−200 ° C, air. 390 25   55 137 57−63

Mechanical properties at elevated temperatures

test t, ° C σ 0.2, MPa σ B, MPa δ 5 ,% ψ,% KCU, J / m 2
20 260 420 32 69 221
200 220 485 20 55 176
300 175 515 23 55 142
400 170 355 24 70 98
500 160 255 19 63 78

Technological properties of steel 10 (st 10)

Forging temperature
Beginning 1300, end 700. Air cooling.
Weldability
It can be welded without restrictions, except for parts after chemical-heat treatment; welding methods: RDS, ADS submerged arc and gas shielded, KTS.
Machinability by cutting
In the hot-rolled state at HB 99−107 and σ B = 450 MPa, K υ tv.spl. = 2,1, K υ b.st. = 1.6.
Tendency to release ability
Not inclined.
Flock sensitivity
Not sensitive.

Temperature of critical points of steel 10 (st 10)

Critical point ° C
Ac1 732
Ac3 870
Ar3 854
Ar1 680

Impact strength of steel 10 (st 10)

Impact strength, KCU, J / cm 2

Delivery status, heat treatment +20 -20 -thirty -40 -50 -60
Proctok with a diameter of 35 mm. 235 196   157   78
Proctok with a diameter of 35 mm. Normalization 73−265   203−216   179  
Proctok with a diameter of 35 mm. Annealing 59−245 49−174   45−83   19−42

Endurance limit steel 10 (st 10)

σ -1, MPa τ -1, MPa n Heat treatment, steel condition
157−216 51 1E + 6 Normalization 900−920 C.

Hardenability of steel 10 (st 10)

Hardness for strips of calcination, HRCэ

Distance from the end, mm / HRC e
1.5 3 4.5 6
31 29 26 20.5
 

Physical properties of steel 10 (st 10)

Test temperature, ° С 20 100 200 300 400 500 600 700 800 900
Normal elastic modulus, E, GPa 206 199 195 186 178 169 157      
Torsional shear elastic modulus G, GPa 78 77 76 73 69 66 59      
Density of steel, pn, kg / m 3 7856 7832 7800 7765 7730 7692 7653 7613 7582 7594
Thermal conductivity coefficient W / (m ° С)   58 54 49 45 40 36 32 29 27
Ud. electrical resistance (p, Nom. m)   190 263 352 458 584 734 905 1081 1130
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) 12.4 13.2 13.9 14.5 14.9 15.1 15.3 12.1 14.8 12.6
Specific heat (C, J / (kg ° C)) 466 479   512   567        

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