Steel 40G2 is used: for the manufacture of axles, crankshafts, piston drains, levers, junction platens, propeller shafts, axle shafts and other parts; casting parts for the industry.

Note

Structural steel high-quality manganese.

Standards

Name	Code	Standards
Sheets and strips	В23	GOST 103-2006
Bars and shapes	В22	GOST 1133-71, GOST 8319.0-75, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Bars and shapes	В32	GOST 4543-71, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 10702-78, GOST 14955-77, GOST 1050-2013, TU 14-1-2118-77, TU 14-11-245-88, TU 14-1-5228-93, TU 14-136-367-2008
Steel castings	В82	OST 1 90093-82
Blanks. Of the workpiece. Slabs	В31	OST 3-1686-90, TU 14-1-4944-90

Mechanical properties

Section, mm	t отпуска, °C	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	d	d₁₀	y, %	KCU, kJ/m²	HB, MPa
Hot-rolled steel and hot rolled with special surface finish
-	-	-	-	-	-	-	-	-	≤217
Steel calibrated and calibrated with special surface finish
-	-	-	-	-	-	-	-	-	≤255
Quenching in water from 820 °C to + vacation at 600 °C, cooling in water
100	-	490	720	18	-	-	56	290	-
Salka in water from 820 °C to + vacation at 600 °C, cooling in water (named place of clippings sample)
100	-	660	800	-	16	-	60	410	241
Rod with cross section of 25 mm. Quenching in oil from 830 °C to + vacation, cooling in oil
-	375	-	1390	-	8	-	44	98	402
Annealing at 900 °C, air cooling, then heating up to 650 °C, cooling with the furnace
-	-	450	800	-	-	18	40	-	-
Quenching in water from 820 °C to + vacation at 600 °C, cooling in water
50	-	590	770	18	-	-	57	680	-
Salka in water from 820 °C to + vacation at 600 °C, cooling in water (named place of clippings sample)
75	-	-	820	-	16	-	60	680	242
Rod with cross section of 25 mm. Quenching in oil from 830 °C to + vacation, cooling in oil
-	450	950	1040	-	12	-	55	285	321
Annealing at 900 °C, air cooling, then heating up to 650 °C, cooling with the furnace
-	-	410	740	-	-	17	40	-	-
Quenching in water from 820 °C to + vacation at 600 °C, cooling in water
75	-	540	730	18	-	-	54	590	-
Salka in water from 820 °C to + vacation at 600 °C, cooling in water (named place of clippings sample)
100	-	490	720	-	18	-	56	290	210
Rod with cross section of 25 mm. Quenching in oil from 830 °C to + vacation, cooling in oil
-	525	880	980	-	14	-	55	343	286
Quenching in oil from 860 °C to + vacation at 650 °C, air cooling
≤25	-	380	660	12	-	-	40	-	-
Salka in water from 820 °C to + vacation at 600 °C, cooling in water (named place of clippings sample)
50	-	590	770	-	18	-	57	680	220
Rod with cross section of 25 mm. Quenching in oil from 830 °C to + vacation, cooling in oil
-	600	680	800	-	18	-	65	883	241
Normalization at 870-925 °C, air cooling + tempering in oil 800-830 °C + vacation at 425 °C
≤38	-	930	1100	10	-	-	40	-	331
Salka in water from 820 °C to + vacation at 600 °C, cooling in water (named place of clippings sample)
75	-	540	730	-	18	-	54	590	210
Rod with cross section of 28 mm. Quenching in oil from 820 °C to + vacation
-	250	1490	1760	-	-	4	19	98	500
-	300	1470	1620	-	-	6	30	98	460
Annealing: heating to 775 °C at a rate of 250 deg/h, exposure time, cooling at a speed of 40 deg/h
-	-	380	660	23	-	-	57	470	179
Casting. Annealing or normalization at 870-890 °C Quenching in oil with 850-870 °C + Vacation
-	600-650	≥390	≥740	≥12	-	-	≥30	≥392	212-255
Rod with cross section of 28 mm. Quenching in oil from 820 °C to + vacation
-	400	1270	1330	-	-	10	50	579	400
Casting. Annealing or normalization at 870-890 °C Quenching in oil with 850-870 °C + Vacation
-	550-600	≥590	≥880	≥8	-	-	≥15	≥196	255-302
Rod with cross section of 28 mm. Quenching in oil from 820 °C to + vacation
-	500	980	1080	-	-	15	60	1245	340
-	600	780	850	-	-	19	62	1726	250

Description mechanical marks

Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
d	Elongation after rupture
d₁₀	Elongation after rupture
y	The relative narrowing
KCU	Toughness
HB	Brinell hardness number

Physical characteristics

Temperature	Е, HPa	r, kg/m³
0	212	7800

A description of the physical symbols

Name	Description
Е	The normal elasticity modulus
G	Modulus of elasticity shear torsion
r	Density
l	Coefficient of thermal conductivity
R	UD. the resistivity
С	Specific heat

Technological properties

Name	The value
Weldability	difficult weldability. RDS required heating and subsequent heat treatment.
Склонность к отпускной хрупкости	inclined
The temperature of forging	Start - 1180-1200 °C, the end - of 800-850 °C. the Cooling sections 60 mm is more slow.
Flock-sensitive sensitivity	sensitive
Machinability	HB 201 Kn TV.SPL.=0.8 Kn b.St.=0.7

Steel 40G2

Designation

Description