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 14955-77, TU 14-1-2118-77, TU 14-11-245-88, TU 14-136-367-2008
Processing of metals by pressure. Forgings	В03	GOST 8479-70, TU 3-896-78, ST ЦКБА 010-2004
Blanks. Of the workpiece. Slabs	В31	OST 3-1686-90, TU 14-1-3202-81, TU 14-1-4944-90

Mechanical properties

Section, mm	t отпуска, °C	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²	HB, MPa
Quenching in oil from 850 °C + vacation at 590 °C, air cooling
≤25	-	980	1080	12	50	765	-
Rod. Quenching in oil from 850 °C + vacation at 580-600 °C, air cooling
≤30	-	940	1060	12	50	961	-
Quenching + tempering (forgings)
300-500	-	640	785	11	33	432	248-293
Quenching in oil from 840 °C to + Vacation
-	200	1520	1710	10	48	765	475
Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential)
-	-	294	491	16	30	294	-
Rod. Quenching in oil from 850 °C + vacation at 580-600 °C, air cooling
120-160	-	840	1000	10	45	579	-
Quenching + tempering (forgings)
500-800	-	640	785	10	30	383	248-293
Quenching in oil from 840 °C to + Vacation
-	300	1400	1570	10	49	383	440
Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential)
-	-	392	589	16	30	491	-
Rod. Quenching in oil from 850 °C + vacation at 580-600 °C, air cooling
160-200	-	800	980	10	45	579	-
Quenching + tempering (forgings)
500-800	-	685	835	10	30	383	262-311
Quenching in oil from 840 °C to + Vacation
-	400	1250	1370	10	50	481	400
Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential)
-	-	491	687	16	30	392	-
Rod. Quenching in oil from 850 °C + vacation at 580-600 °C, air cooling
200-240	-	780	980	10	45	579	-
Quenching + tempering (forgings)
300-500	-	735	880	11	30	383	277-321
Quenching in oil from 840 °C to + Vacation
-	500	1080	1220	12	54	765	350
Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential)
-	-	589	765	16	35	491	-
Rod. Quenching in oil from 850 °C + vacation at 580-600 °C, air cooling
30-50	-	900	1040	12	50	961	-
Quenching + tempering (forgings)
500-800	-	735	930	10	30	383	293-331
Quenching in oil from 840 °C to + Vacation
-	600	900	1030	17	60	1158	300
Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential)
-	-	687	834	14	35	491	-
Rod. Quenching in oil from 850 °C + vacation at 580-600 °C, air cooling
50-80	-	880	1020	12	50	961	-
Normalization (forgings)
100-300	-	685	835	12	38	481	262-311
Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential)
-	-	785	932	13	35	392	-
Rod. Quenching in oil from 850 °C + vacation at 580-600 °C, air cooling
80-120	-	860	1020	12	50	765	-
Normalization (forgings)
300-500	-	685	835	11	33	383	262-311
Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential)
-	-	883	1010	12	30	392	-
Normalization (forgings)
100-300	-	735	880	12	35	481	277-321
Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential)
-	-	981	1079	11	30	294	-

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
y	The relative narrowing
KCU	Toughness
HB	Brinell hardness number

Physical characteristics

Temperature	Е, HPa	G, HPa	l, W/(m · °C)	R, Mr. · m	a, 10^-6 1/°C	С, J/(kg · °C)
0	207	82	36	292	-	-
20	207	-	36	292	-	-
100	203	80	36	317	118	496
200	196	77	36	358	123	508
300	192	76	35	425	127	525
400	182	72	34	506	131	538
500	173	69	33	602	134	567
600	167	66	31	742	137	601
700	147	57	30	890	139	672
800	135	53	29	1100	139	672
1000	-	-	-	-	108	697

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

Technological properties

Name	The value
Weldability	does not apply to welded structures.
Склонность к отпускной хрупкости	tend not
The temperature of forging	Start - 1200 °C, the end - 850 °C.
Flock-sensitive sensitivity	highly sensitive

Steel 38KHN3MA

Designation

Description

Note

Standards

Mechanical properties

Description mechanical marks

Physical characteristics

A description of the physical symbols

Technological properties

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