Steel 30KHGSA

Designation

Name	The value
Designation GOST Cyrillic	30ХГСА
Designation GOST Latin	30XGCA
Transliteration	30HGSA
By chemical elements	30CrMnС

Description

30KHGSA steel is used: for the production of hot rolled plates and pressed extra virgin profiles; different upgradable parts (shafts, axles, gears, flanges, housings plating, blades of compressors), operating at temperatures up to +200 °C; levers, push bars, responsible welded structures, operating at alternating loads; mounting parts operating at low temperatures, seamless pipes for the fabrication of parts and structures in motovelotehnika; wire intended for the manufacture of rivets and bolts by cold upsetting; welding wire; pipes used in the aviation technique.

Note

Structural steel high-quality chromonemata.

Standards

Name	Code	Standards
Bars and shapes	В32	GOST 1051-73, GOST 4543-71, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 10702-78, GOST 14955-77, OST 1 90223-76, TU 14-1-5414-2001, TU 14-1-1885-85, TU 14-1-2118-77, TU 14-1-2765-79, TU 14-1-658-73, TU 14-1-950-74, TU 1-9-30-82, TU 14-1-3238-81, TU 14-11-245-88, TU 14-1-3238-2006, TU 14-1-1271-75, TU 14-1-5228-93, TU 14-136-367-2008
Sheets and strips	В33	GOST 11268-76, GOST 11269-76, TU 14-105-490-86, TU 14-1-1409-75, TU 14-1-1699-76, TU 14-1-1904-76, TU 14-1-1994-76, TU 14-1-2360-78, TU 14-1-4013-85, TU 14-1-4118-86, TU 14-229-276-88, TU 14-1-4118-2004
Bars and shapes	В22	GOST 1133-71, GOST 8319.0-75, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Sheets and strips	В23	GOST 82-70, GOST 103-2006
Processing of metals by pressure. Forgings	В03	GOST 8479-70, OST 5Р.9125-84, ST ЦКБА 010-2004
Steel pipes and fittings to them	В62	GOST 8732-78, GOST 8734-75, GOST 9567-75, GOST 12132-66, GOST 19277-73, GOST 21729-76, GOST 23270-89, GOST 24950-81, GOST 8733-87, GOST 8731-87, GOST Р 53383-2009, TU 14-3-1140-82, TU 14-3-271-74, TU 14-3-674-78, TU 14-3-675-78, TU 14-3-531-76, TU 14-3-473-76, TU 14-159-241-93, TU 14-3-957-80, TU 14-3-1654-89
Classification, nomenclature and General rules	В20	OST 1 90005-91
Blanks. Of the workpiece. Slabs	В21	OST 14-13-75
Blanks. Of the workpiece. Slabs	В31	OST 3-1686-90, TU 14-1-1563-75, TU 14-1-1672-76, TU 14-1-1687-76, TU 14-1-3716-84, TU 14-1-4944-90, TU 14-1-4992-91, TU 14-1-4797-90, TU 1-92-156-90
Welding and cutting metals. Soldering, riveting	В05	TU 14-1-4816-90
Tape	В34	TU 14-4-1152-81
Steel wire medium and high carbon	В72	TU 14-4-385-73

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	V	Ti	Mo	W
TU 14-1-1885-85	0.28-0.34	≤0.015	≤0.025	0.8-1.1	0.8-1.1	0.9-1.2	≤0.3	Rest	≤0.25	-	-	-	-
TU 14-1-2765-79	0.28-0.34	≤0.015	≤0.025	0.8-1.1	0.8-1.1	0.9-1.2	≤0.3	Rest	≤0.25	≤0.05	≤0.03	≤0.15	≤0.2
TU 14-4-385-73	0.28-0.34	≤0.025	≤0.025	0.8-1.1	0.8-1.1	0.9-1.2	≤0.3	Rest	≤0.25	≤0.05	≤0.03	≤0.15	≤0.2
TU 14-1-4118-2004	0.28-0.34	≤0.025	≤0.025	0.8-1.1	0.8-1.1	0.9-1.2	≤0.3	Rest	≤0.3	≤0.05	≤0.03	≤0.15	≤0.2
TU 14-3-674-78	0.28-0.34	≤0.005	≤0.025	0.8-1.1	0.8-1.1	0.9-1.2	≤0.3	Rest	-	-	-	-	-

Fe is the basis.
GOST 4543-71 regulates the content of high-quality steel: P≤0,025%; S≤0.015%; Сu≤0.25%.
According to TU 14-1-2765-79 the chemical composition is given for steel 30ХГСА-Ш.
According to TU 14-1-3238-81 for steel grade 30ХГСА-СШ the content of S≤0.015%. For steel grade 30ХГСА (select), the carbon content is set at C = 0.27-0.32%.
According to TU 14-3-674-78 the chemical composition is given for steel 30ХГСА-ВД.
According to GOST 19277-73 the chemical composition is given for steel 30ХГСА-ВД; steel grade 30HGSA must have a chemical composition in accordance with GOST 4543. When smelting steel skapprotsessom the mass fraction of copper should be ≤ 0.25% in steels of grades 30ХГСА and 30ХГСА-ВД. The maximum deviation in chemical composition is in accordance with GOST 4543. For steel grade 30ХГСА-ВД the total mass fraction of sulfur and phosphorus should not exceed 0.25%, a deviation in manganese plus 0.1 and minus 0.2% is allowed.
According to GOST 21729-76 the chemical composition is given for steel 30ХГСА-ВД; steel grade 30HGSA must have a chemical composition in accordance with GOST 4543. When smelting steel skapprotsessom the mass fraction of copper should be ≤ 0.25% in steels of grades 30ХГСА and 30ХГСА-ВД. The maximum deviation in chemical composition is in accordance with GOST 4543. For steel grade 30ХГСА-ВД the total mass fraction of sulfur and phosphorus should not exceed 0.22%.
According to TU 14-1-1885-85 the chemical composition is given for steel grade 30ХГСА-ВД. To ensure the required grain size, it is allowed to introduce vanadium in the steel smelting at the rate of its content in steel no more than 0.10%, the content of which in steel is not determined. The presence of tungsten to 0.20%, molybdenum to 0.15%, titanium to 0.030% is not a defect. The allowable variation in manganese content in steel is + 0.010 / -0.020%.

Mechanical properties

Section, mm	t отпуска, °C	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	d₄	d₁₀	y, %	KCU, kJ/m²	HB, MPa	HRC
Steel calibrated and calibrated with special surface finish
-	-	-	490-740	-	-	-	-	-	-	-
-	-	-	≤690	-	-	-	≥57	-	≤229	-
Tubes seamless cold - and hot-deformed in the delivery condition heat-treated (NV - wall > 10 mm)
	-	-	≥686	≥11	-	-	-	-	-	-
	-	-	≥491	≥18	-	-	-	-	≤229	-
Forgings. Hardening + Vacation
≤100	-	≥490	≥655	≥16	-	-	≥45	≥590	212-248	-
100-300	-	≥490	≥655	≥13	-	-	≥40	≥540	212-248	-
≤100	-	≥540	≥685	≥15	-	-	≥45	≥590	223-262	-
≤100	-	≥590	≥735	≥14	-	-	≥45	≥590	235-277	-
100-300	-	≥590	≥735	≥13	-	-	≥40	≥490	235-277	-
≤100	-	≥640	≥785	≥13	-	-	≥42	≥590	248-293	-
≤100	-	≥675	≥835	≥13	-	-	≥42	≥590	262-311	-
Rolled steel. Quenching in oil at 880 °C + St at 600 °C, cooling in water
120-160	-	≥590	≥740	≥14	-	-	≥50	≥780	-	-
Bar diameter 20-70 mm. Quenching in oil at 880 °C to + Vacation, chilling in the water
-	200	≥1570	≥1700	≥11	-	-	≥44	-	≥487	-
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
-	-	-	690-880	-	-	-	-	-	212-262	19-27
The sample is diameter 5 mm, length 25 mm, laminated. The rate of deformation of 2 mm/min strain Rate 0,0013 1/
-	-	-	≥175	≥59	-	-	≥51	-	-	-
Hot-rolled steel and hot rolled with special surface finish. Annealing
-	-	-	-	-	-	-	-	-	≤217	-
Rolled steel. Quenching in oil at 880 °C + St at 600 °C, cooling in water
15-30	-	≥880	≥1000	≥12	-	-	≥50	≥690	-	-
Bar diameter 20-70 mm. Quenching in oil at 880 °C to + Vacation, chilling in the water
-	300	≥1520	≥1630	≥11	-	-	≥54	-	≥470	-
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
-	-	-	880-1080	-	-	-	-	-	262-311	27-34
The sample is diameter 5 mm, length 25 mm, laminated. The rate of deformation of 2 mm/min strain Rate 0,0013 1/
-	-	-	≥85	≥62	-	-	≥75	-	-	-
Rolled steel. Quenching in oil at 880 °C + St at 600 °C, cooling in water
160-200	-	≥530	≥720	≥14	-	-	≥45	≥590	-	-
Bar diameter 20-70 mm. Quenching in oil at 880 °C to + Vacation, chilling in the water
-	400	≥1320	≥1420	≥12	-	-	≥56	-	≥412	-
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
-	-	-	1080-1270	-	-	-	-	-	311-363	34-39
The sample is diameter 5 mm, length 25 mm, laminated. The rate of deformation of 2 mm/min strain Rate 0,0013 1/
-	-	-	≥53	≥84	-	-	≥90	-	-	-
Rolled steel. Quenching in oil at 880 °C + St at 600 °C, cooling in water
200-240	-	≥490	≥710	≥14	-	-	≥45	≥590	-	-
Bar diameter 20-70 mm. Quenching in oil at 880 °C to + Vacation, chilling in the water
-	500	≥1140	≥1220	≥15	-	-	≥56	-	≥362	-
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
-	-	-	1080-1420	-	-	-	-	-	311-401	34-43
The sample is diameter 5 mm, length 25 mm, laminated. The rate of deformation of 2 mm/min strain Rate 0,0013 1/
-	-	-	≥37	≥71	-	-	≥90	-	-	-
Ring clinocerinae for OST 1 90223-76. Quenching in oil with 865-895 °C + Vacation at 490-590 °C, cooling in oil or water
	-	≥833	≥1020	≥9	-	-	≥40	≥392	-	-
Rolled steel. Quenching in oil at 880 °C + St at 600 °C, cooling in water
30-50	-	≥760	≥880	≥12	-	-	≥50	≥690	-	-
Bar diameter 20-70 mm. Quenching in oil at 880 °C to + Vacation, chilling in the water
-	600	≥940	≥1040	≥19	-	-	≥62	-	≥300	-
The sample is diameter 5 mm, length 25 mm, laminated. The rate of deformation of 2 mm/min strain Rate 0,0013 1/
-	-	-	≥21	≥59	-	-	≥90	-	-	-
Steel hot-rolled sheet (4-60 mm) 4-th and 5-th categories. Quenching in oil at 880±15 °C + Vacation at 480-570 °C, cooling in oil
	-	-	≥1080	≥9	-	-	-	≥490	-	-
Rolled steel. Quenching in oil at 880 °C + St at 600 °C, cooling in water
50-80	-	≥740	≥860	≥14	-	-	≥50	≥780	-	-
The sample is diameter 5 mm, length 25 mm, laminated. The rate of deformation of 2 mm/min strain Rate 0,0013 1/
-	-	-	≥10	≥85	-	-	≥90	-	-	-
A sheet of thin (≤3.9 mm) hot - and cold-rolled. Quenching in oil at 880 °C + Vacation at 500-570 °C, cooling in oil
	-	-	≥1080	≥10	-	-	-	-	-	-
Rolled steel. Quenching in oil at 880 °C + St at 600 °C, cooling in water
80-120	-	≥670	≥820	≥14	-	-	≥50	≥780	-	-
Rod. Quenching in oil at 880 °C to + Vacation at 560 °C, air cooling
-	-	≥820	≥980	≥11	-	-	≥50	-	-	-
Flats on the other 14-1-4118-2004
	-	-	490-736	-	≥20	≥16	-	-	-	-
Rod. Quenching in oil at 880 °C to + Vacation at 560 °C, air cooling
-	-	≥780	≥900	≥16	-	-	≥69	-	-	-
Wire on the other 14-4-385-73 in the delivery condition. Subanguina with pre-annealing to granular pearlite
	-	-	490-687	≥8	-	-	-	-	-	-
Rod. Quenching in oil at 880 °C to + Vacation at 560 °C, air cooling
-	-	≥640	≥690	≥21	-	-	≥84	-	-	-
Bars hot rolled, forged and calibrated. Quenching with 865-895 °C oil + Leave in 510-570 °C, cooling in oil
	-	≥830	≥1080	≥10	-	-	≥45	≥490	311-375	-
Rod. Quenching in oil at 880 °C to + Vacation at 560 °C, air cooling
-	-	≥490	≥540	≥27	-	-	≥84	-	-	-
Bars and strip hot rolled and forged. Quenching in oil with 865-895 °C + Vacation at 510-570 °C, cooling in oil
	-	≥835	≥1080	≥10	-	-	≥45	≥490	311-363	-
Rods made of steel 30KHGSA on the other 14-1-1885-85. Quenching in oil with 870-890 °C + Vacation at 510-570 °C, cooling in oil. In the graph KCU KCU values are shown along the fiber/KCU across the grain
Образец 25х25	-	≥885	≥1080	≥10	-	-	≥45	≥490/294	310-363	-
Bars and rods of steel treated in the ladle a synthetic slag in the delivery condition on the other 14-1-658-73. Samples of the cross
	-	-	-	≥6	-	-	≥28	≥294	-	-
Rolled steel. Quenching in oil with 860-880 °C + Vacation at 200-250 °C air cooling
15-30	-	≥1270	≥1470	≥7	-	-	≥40	-	-	43-51
Rolled steel. Quenching in oil with 860-880 °C + Vacation at 540-560 °C, cooling in water or oil
30-60	-	≥690	≥880	≥9	-	-	≥45	≥590	225	-
Seamless pipes: for oil and fuel lines according to GOST 19277-73, cold, cold and toplokatie according to GOST 21729-76 heat-treated in the delivery condition
	-	-	≥490	≥18	-	-	-	-	-	-

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
d₄	Elongation after rupture
d₁₀	Elongation after rupture
y	The relative narrowing
KCU	Toughness
HB	Brinell hardness number
HRC	Rockwell hardness (indenter diamond spheroconical)

Physical characteristics

Temperature	Е, HPa	G, HPa	r, kg/m³	l, W/(m · °C)	R, Mr. · m	a, 10^-6 1/°C	С, J/(kg · °C)
0	215	84	7850	38	210	-	-
20	215	83	7850	38	210	-	-
100	211	82	7830	38	-	117	496
200	203	80	7800	37	-	123	504
300	196	75	7760	37	-	129	512
400	184	71	7730	36	-	134	533
500	173	66	7700	34	-	137	554
600	164	61	7670	33	-	14	584
700	143	55	-	31	-	143	622
800	125	48	-	30	-	143	622
1000	-	-	-	-	-	129	693

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
a	The coefficient of linear expansion

Technological properties

Name	The value
Weldability	Limited weldability. Welding methods: SMAW, ADS submerged arc and gas protection, ARDS, ESW. Recommended heating and subsequent heat treatment, the CCC without restriction.
Склонность к отпускной хрупкости	Inclined.
The temperature of forging	Start - 1240 °C, the end - 800 °C. the cross Sections up to 50 mm are cooled in stacks in the air, 51-100 mm - in boxes.
Flock-sensitive sensitivity	Sensitive.
Machinability	In hot-rolled condition in NV 207-217 blower SB=710 MPa Kn TV.SPL.=0,85 Kn b.St.=0,75.
Macrostructure and pollution	Macrostructure of steel when testing for the breaks in the longitudinal direction and transverse templeto selected from rolled, should not have shrinkage, porosity, bubbles, cracks, delamination, inclusions and placenow and defects of fracture, listed in Annex 3 GOST 10243. The Central porosity, point heterogeneity and phase separation in the square should not exceed 1 points; layer-by-layer crystallization and the bright loop - 3 points reference scales GOST 10243. All other defects under GOST 10243, are not allowed. Pollution steel non-metallic inclusions should be according to the average score is not higher (in points): oxides of point 1,5, 2,0 stroke oxides, silicates fragile 1,0, 1,0 silicates plastic, silicates, non-deformed 2,5, 2,5 sulfides, nitrides stroke and point 1,0.