Steel ВСт3кп

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 ВСт3кп

Steel ВСт3кп: 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 ВСт3кп.

General information steel ВСт3кп

Substitute brand

steel: ВСт3пс, 18Гпс

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. Stripe 103−70 GOST, GOST 535−79.

Application

Shapes and flat products with thickness from 10 to 36mm bearing elements of welded structures operating at variable loads at temperatures from -40 to +425°C, and for non-load bearing elements of welded structures operating at temperatures from -40 to +425°C With guaranteed weldability.

Chemical composition of steel ВСт3кп

Chemical element	%
Silicon (Si), not more	0.15
Manganese (Mn)	0.80−1.10
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)	0.14−0.22
Phosphorus (P), not more	0.04
Chromium (Cr), not more	0.30

Mechanical properties of steel ВСт3кп

Mechanical properties at elevated temperatures

t test,°C	σ_0,2, MPa	σ_B, MPa	δ₅, %	δ, %	ψ, %	KCU, j/m²
Steel hot-rolled sheet with a thickness of 12−50 mm
20	225−390	410−570		26−39	58−68
200	215−390
300	215−360
400	195−265
500	175−245	300−400			65−76
Steel hot-rolled sheet with a thickness of 20 mm, strain aging at 350 °C, exposure 1000 h
20	370	510	22		78	120
200	320	470	22		63	127
300	320	510	18		58	129
400	275	440	22		65	116
500	245	340	25		78	98

Technological properties of steel ВСт3кп

The temperature of forging

Beginning about 1250, the end of the 800.

Weldability

Welded without restriction; welding methods: SMAW, ADS submerged arc and gas protection electroslag welding and CCC. For thickness of more than 36 mm recommended heating and subsequent heat treatment is mandatory.

Machinability

In hot-rolled condition with HB 124 and σ_B = 400МПа K_{υ TV.SPL.} = 1,8, K _{υ b.St.} = 1,6

The tendency to the selling ability

Tend not

Placeofpublication

Not sensitive

Toughness of steel ВСт3кп

Impact strength, KCU, j/cm²

Delivery condition, heat treatment	+20	0	after majsternia	-20	-30	-40
Leaf cross section 5−9 mm	78		39	39
Leaf cross section of 10−30 mm	69		29	29
Leaf cross section 31−40 mm	49
Universal rental longitudinal section 5−9 mm	98		49	49
Universal rental longitudinal section 10−30 mm	78		29	29
Universal rental longitudinal section 31−40 mm	69
Bars and shapes longitudinal section 5−9 mm	108		49	49
Bars and shapes longitudinal section 10−30 mm	98		29	29
Bars and shapes longitudinal section 31−40 mm	88
Sheet thickness of 12−20 mm	87−195	54−129		34−125		25−111
Sheet thickness of 30 mm	87−132	60−98		23−96		16−69
Plate thickness 40 mm	162−179	94−103		93−103	20−46	10−36
Sheet thickness of 50 mm	130−173	71−130		18−84	19 to 56	7−30
Sheet thickness of 12−20 mm (shapes)	116−219	77−204		32−146		17−132

Endurance limit of steel ВСт3кп

σ_-1, MPa	n	Heat treatment was sostenitori
181	1E+7	Samples of 10 mm diameter smooth
104	1E+7	Samples with a diameter of 10 mm incision.

Steel ВСт3кп

Description