Steel ВСт6сп

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 ВСт6сп

Steel ВСт6сп: marochnik steels and alloys. Below the systematized information on the purpose, chemical composition, types of supplies, substitutes, temperature of critical points physical, mechanical, technological and casting properties of the brand — Steel ВСт6сп.

General information steel ВСт6сп

Substitute brand

steel ВСт5сп

Delivery type

Long products, including shapes: GOST 2590−71, 2591−71 GOST, GOST 2879−69, GOST 8509−86, GOST 8510−86, 8239−72 GOST, GOST 8240−72, 535−79 GOST, GOST 380−71. A thick sheet of GOST 19903−74. Strip, GOST 103−76, GOST 82−70, GOST 535−79. Pipe GOST 8734−75.

Application

For details high tensile strength: axes, shafts, fingers, pistons and other parts in heat-treated condition as well as for rod of rebar periodic profile.

Chemical composition of steel ВСт6сп

Chemical element	%
Silicon (Si)	0.15−0.35
Manganese (Mn)	0.50−0.80
Copper (Cu), not more	0.30
Arsenic (As), not more	0.08
Nickel (Ni), not more	0.30
Sulfur (S), not more	0.05
Carbon (C)	0.38−0.49
Phosphorus (P), not more	0.04
Chromium (Cr), not more	0.30

Mechanical properties of steel ВСт6сп

Mechanical properties at elevated temperatures

t test,°C	σ_0,2, MPa	σ_B, MPa	δ₅, %	ψ, %	KCU, j/m²
Rental
20	325	535	25	52	63
100	305	505	20	53	71
200	305			39	82
300	200		21	51	71
400	180	500	23	64	60
500	150	355	24	70	43
600	81	190	35	83	74
A sample with a diameter of 10 and a length of 100 mm laminated. Speed deformation of 120 mm/min and strain Rate of 0.02 1/s.
700		165	33	94
800		105	62	95
900		75	50	93
A sample with a diameter of 10 and a length of 50 mm laminated. Speed deformation of 120 mm/min and strain Rate of 0.04 1/s.
1000		55	92	100
1100		37	100	100
1200		27	106	100

Mechanical properties of rolled

Heat treatment, delivery condition	Cross-section, mm	σ_0,2, MPa	σ_B, MPa	δ₅, %
Hot-rolled steel	<20	315	590	15
Hot-rolled steel	20−40	305	590	14
Hot-rolled steel	>40	295	590	12
Hot-deformed pipes of the heat-treated		305	590	14

Mechanical properties of forgings

Cross-section, mm

σ_0,2, MPa

σ_B, MPa

δ₅, %

ψ, %

KCU, j/m²

The Annealing, 830−860°C

<400

670

Isothermal annealing, 830−860°C, isothermal exposure at 630−660°C

<400

640

Normalization 840−880, air cooling to 450−500°C. the High holidays 620−650°C.

<300

640

197

Quenching 840−860°C, oil. Vacation 580−620°C.

<220

390−530

700−850

17−24

46−54

34−54

Quenching 840−860°C, water. Vacation 600−640°C.

<220

390−530

670−810

18−23

50−57

39−64

Technological properties of steel ВСт6сп

The temperature of forging

Beginning about 1250, the end 780. Cross-section up to 400 mm are cooled in air.

Weldability

Limited weldability; welding methods: SMAW, ADS submerged arc and gas protection electroslag welding. Recommended heating and subsequent heat treatment. The CCC without restriction.

Machinability

In hot-rolled condition at σ_B = 640МПа and HB 158 K_{υ TV.SPL.} = 1,2, K_{υ b.St.} = 1,2.

The tendency to the selling ability

Tend not.

Placeofpublication

Not sensitive.

Temperature of critical points of steel ВСт6сп

Critical point	°C
Ac1	725
Ac3	790
Ar3	780
Ar1	690

Toughness of steel ВСт6сп

Impact strength, KCU, j/cm²

Delivery condition, heat treatment	+20	-30	-60
After rolling	63	46	12

Endurance limit of steel ВСт6сп

σ_-1, MPa	σ_B, MPa
245	590

The physical properties of steel ВСт6сп

Test temperature,°C	20	100	200	300	400	500	600	700	800	900
The normal elasticity modulus, E, GPA	197	197	186	175	168
Modulus of elasticity shear torsion G, GPA	82	80	77	74	71	67	62

Steel ВСт6сп

Description