Steel ВСт5сп

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 ВСт5сп

Steel ВСт5сп: 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 ВСт5сп.

General information steel ВСт5сп

Substitute brand

steel St6sp, ВСт4сп

Delivery type

Long products, including shapes: GOST 2590−71, 2591−71 GOST, GOST 2879−69, 535−79 GOST, GOST 19771−74, GOST 197721−74, 8278−83 GOST, GOST 380−71, GOST 8509−86, 8510−86 GOST, GOST 8240−72, GOST 8239−72. A thick sheet of GOST 19903−74. Tape GOST 6009−74. Strip, GOST 103−76, GOST 82−70, GOST 535−79. Wire 2590−71. Forgings and kovanye billet GOST 8479−70. Pipe GOST 8639−82, GOST 8071−87. The sheet GOST 19903−74.

Application

Details riveted structures, bolts, nuts, handle, linkage, bushings, chassis, bolsters, wedges, axles, levers, stops, pins, fingers, rods, sprockets, tubular bars, flanges and other parts operating in the interval temperatures from 0 to +425°C; forging cross-sections up to 800 mm.

Chemical composition of steel ВСт5сп

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)	0.28−0.37
Phosphorus (P), not more	0.04
Chromium (Cr), not more	0.30

Mechanical properties of steel ВСт5сп

Mechanical properties at elevated temperatures

t test,°C	σ_0,2, MPa	σ_B, MPa	δ₅, %	ψ, %	KCU, j/m²
Rental
20	320	490	28	58	83
100					93
200					97
300	200				97
400	165	470		66	69
500	150	330		70	47
600	73	155	44	92	79
The sample is diameter 5 mm, length 25 mm, prokatnyh. Speed deformation of 2 mm/min strain rate of 0.001 1/s.
900	40	66	62	90
1000	37	49	81	90
1100	14	28	65	90
1200		16	59	90

Mechanical properties of rolled

Heat treatment, delivery condition	Cross-section, mm	σ_0,2, MPa	σ_B, MPa	δ₅, %	δ₄, %
Hot-rolled steel	<20	285	490−630	20
Hot-rolled steel	20−40	275	490−630	19
Hot-rolled steel	40−100	265	490−630	17
Hot-rolled steel	>100	255	490−630	17
Sheets hot-rolled	<2,0		490−630		17
Sheets hot-rolled	2,0−3,9		490−630		19
Sheets cold-rolled	<2,0		490−630		19
Sheets cold-rolled	2,0−3,9		490−630		21
Hot-deformed pipes, heat-treated		275	490	17

Mechanical properties of forgings

Cross-section, mm	σ_0,2, MPa	σ_B, MPa	δ₅, %	ψ, %	KCU, j/m²	HB
Normalization
100−300	175	350	24	50	59	101−143
300−500	175	350	22	45	54	101−143
500−800	175	350	20	40	49	101−143
100−300	195	390	23	50	54	111−156
300−500	195	390	20	45	49	111−156
500−800	195	390	18	38	44	111−156

Technological properties of steel ВСт5сп

The temperature of forging

The beginning of the 1260, the end of the 750. Cross-sections up to 800 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 state when HB 158 and σ_B = 640 MPa K_{υ TV.SPL.} = 1,2, K_{υ b.St.} = 1,2.

The tendency to the selling ability

Not sklonna.

Placeofpublication

Not sensitive.

Temperature of critical points of steel ВСт5сп

Critical point	°C
Ac1	730
Ac3	825
Ar3	815
Ar1	690

Toughness of steel ВСт5сп

Impact strength, KCU, j/cm²

Delivery condition, heat treatment	+20	-10	-40
Sheet thickness of 11 mm	71	24	12
Sheet thickness of 20 mm	57	24	10
Plate thickness 40 mm	71	36	15
Sheet thickness of 50 mm	71	29	15

Endurance limit of steel ВСт5сп

σ_-1, MPa	n
274	1E+6
223	5E+6

The physical properties of steel ВСт5сп

Test temperature,°C	20	100	200	300	400	500	600	700	800	900
The normal elasticity modulus, E, GPA	198	196	191	185	164
Modulus of elasticity shear torsion G, GPA	81	80	77	74	71	67	62

Steel ВСт5сп

Description