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Steel 35HGSA

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 35HGSA

Steel 35HGSA: brand of steels and alloys. Below is the 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 35HGSA.

General information about steel 35HGSA

Substitute brand
Steel 30HGS, 30HGSA, 30HGT, 35HM.
Delivery type
Long products, including shaped: GOST 4543−71, GOST 259071, GOST 2591−71, GOST 2879−69, GOST 10702−78. Calibrated bar GOST 7417−75, GOST 8559−75, GOST 8560−78, GOST 1051−73, GOST 10702−78, GOST 4543−71. Polished bar and silver bar GOST 4543−71, GOST 14955−77. Strip GOST 103−76. Forgings and forged billets GOST 1133−71, GOST 8479−70, GOST 4543−71.
Application
Flanges, cams, pins, rollers, levers, axles, parts of welded structures and other upgradable parts of complex configuration, operating under conditions of alternating loads.

Chemical composition of 35HGSA steel

Chemical element %
Silicon (Si) 1.10−1.40
Manganese (Mn) 0.80−1.10
Copper (Cu), no more 0.30
Nickel (Ni), no more 0.30
Sulfur (S), no more 0.025
Carbon (C) 0.32−0.39
Phosphorus (P), no more 0.025
Chromium (Cr) 1.10−1.40

Mechanical properties of steel 35HGSA

Mechanical properties

Heat treatment, delivery condition Section, mm σ 0.2, MPa σ B, MPa δ 5 ,% ψ,% KCU, J / m 2 HB
Isothermal quenching at 880 ° C in a mixture of potassium and sodium nitrate, having a temperature of 280−310 ° C, air cooling.
  Samples 1270 1620 nine 40 39  
Forgings. Hardening. Vacation.
KP 490. 100−300 490 660 thirteen 40 54 212−248
KP 540 100−300 540 690 thirteen 40 49 223−262
KP 590 <100 590 730 fourteen 45 59 235−277
KP 640 <100 640 780 thirteen 42 59 248−293

Mechanical properties at elevated temperatures

test t, ° C σ 0.2, MPa σ B, MPa δ 5 ,% ψ,% HRC e
Hardening 880 ° С, oil. Vacation 500 ° C.
20 1200 1300 eleven 52 42
250   1260 12 57  
400   1000 fourteen 72  
500   540 31 70  

Mechanical properties depending on the tempering temperature

vacation t, ° С σ 0.2, MPa σ B, MPa δ 5 ,% ψ,% KCU, J / m 2 HRC e
Tempering 880 ° C, oil
200 1570 1910 12 48 49 52
300 1550 1760 12 50 59 50
400 1420 1620 12 51 44 47
500 1180 1300 fourteen 52 44 42
Isothermal quenching at 880 ° С, nitrate 300 ° С
Without otp. 1460 1670 12 52 70 50
300 1450 1670 12 55 71 50
400 1410 1570 fourteen 54 53 48
500 1220 1330 fourteen 53 39 43

Mechanical properties depending on the section

Section, mm σ 0.2, MPa σ B, MPa δ 5 ,% ψ,% HB
Hardening 880 ° С, oil. Vacation 500 ° C, water.
20 1000 1110 12 54 322
40 940 1080 eleven 50 310
60 860 960 eleven 46 270
Hardening 880 ° С, oil. Vacation 600 ° C, water.
40 810 970 fourteen 58 280
60 780 880 thirteen 58 250

Technological properties of steel 35HGSA

Forging temperature
Beginning 1250, end 860−880. Sections up to 100 mm are cooled in air, 101−200 mm — in a mold, 201−300 mm — with a furnace.
Weldability
restrictedly weldable. Welding methods: RDS, ADS submerged arc and gas shielded, ArDS. Heating is recommended and subsequent heat treatment is required, KTS without restrictions.
Machinability by cutting
In the hot-rolled state at HB 207−217 and σ B = 710 MPa K υ tv.spl. = 0.85, K υ b.st. = 0.75.
Tendency to release ability
inclined
Flock sensitivity
sensitive

Temperature of critical points of steel 35HGSA

Critical point ° C
Ac1 760
Ac3 830
Ar3 705
Mn 670

Impact strength of steel 35HGSA

Impact strength, KCU, J / cm 2

Delivery status, heat treatment -40 -60
Tempering 880 C, oil. Vacation 200 С, air 49 39
Tempering 880 C, oil. Vacation 300 С, air 49 39
Tempering 880 C, oil. Vacation 400 С, air 39 29
Isothermal hardening 880 C, nitrate 300 C. Vacation 300 C, 1 h, air 62 53
Isothermal hardening 880 C, nitrate 300 C. Vacation 400 C, 1 h, air 48 37

Hardenability of steel 35HGSA

Distance from the end, mm / HRC e
1.5 3 4.5 6 nine 12 fifteen eighteen 24 thirty
50.5−50 49−54 47.5−53 46−52.5 41.5−52 38−51 36.5−48.5 35−46.5 30−43 25−40.5
Crit. Diam. in water, mm Crit. Diam. in oil, mm Crete. hardness, HRCэ
60 40 47
60 20 51

Physical properties of steel 35HGSA

Test temperature, ° С 20 100 200 300 400 500 600 700 800 900
Torsional shear elastic modulus G, GPa 84 82 79 75 71 66 62 54 47  

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