Steel 35HGSL

Designation

Name	The value
Designation GOST Cyrillic	35ХГСЛ
Designation GOST Latin	35XGCL
Transliteration	35HGSL
By chemical elements	35CrMnС

Description

35HGSL steel is used: for the manufacture of castings, gears, sprockets, axles, shafts, couplings and other critical parts, which are requirements of high wear-resisting; castings investment casting for aircraft industry group I — loaded items with the specific requirements for density and mechanical properties: high load brackets, sealed the housing, the frames of gyroscopes, stabilizers, etc. and group II — non-loaded and lightly loaded parts, rings, flanges, fittings, leaking instrument cabinets, etc.

Standards

Name	Code	Standards
Steel castings	В82	GOST 977-88, OST 24.920.01-80, OST 3-4365-79, OST 1 90093-82, OST 1 80059-83
Classification, nomenclature and General rules	В20	OST 84-218-85, OST 1 90005-91
Castings with special properties (iron and steel)	В83	TU 1-812-0054-81, TU 4112-78269737-008-05

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	N	Al	Mo	W
OST 1 90093-82	0.32-0.4	≤0.025	≤0.025	0.9-1.2	0.7-1	0.6-0.9	≤0.4	Rest	≤0.3	≤0.015	≤0.08	0.1-0.2	≤0.2
GOST 977-88	0.3-0.4	≤0.04	≤0.04	1-1.3	0.6-0.9	0.6-0.8	-	Rest	-	-	-	-	-

Fe is the basis.

Mechanical properties

Section, mm	t отпуска, °C	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²	HB, MPa	HRC
Casting a cross section of 30 mm. Quenching in oil with 870-890 °C + vacation at 630-670 °C, air cooling
-	-	620-650	800-820	14-18	23-36	-	-	-
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
-	-	-	780-980	-	-	-	223-277	22-29
Casting a cross section of 30 mm. Quenching in oil with 870-890 °C + vacation at 630-670 °C, air cooling
-	-	560-630	720-780	12-16	31-49	-	-	-
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
-	-	-	980-1180	-	-	-	277-341	29-36
Hardening in air, 870-880 °C + vacation at 630-670 °C, air cooling
100	-	≥589	≥785	≥10	≥20	≥392	-	-
Casting a cross section of 30 mm. Quenching in oil with 870-890 °C + vacation at 630-670 °C, air cooling
-	-	520-590	700-770	9-16	25-51	-	-	-
Normalization at 870-890 °C + vacation at 570-600 °C, air cooling
100	-	≥343	≥589	≥14	≥25	≥294	163-240	-
Casting a cross section of 30 mm. Quenching in oil with 870-890 °C + vacation at 630-670 °C, air cooling
-	-	545-610	720-830	9-16	12-39	-	-	-
Annealing at 850-870 °C, cooling with the furnace to 300 °C, air cooling
30	-	≥295	≥590	≥20	≥40	-	-	-
Casting a cross section of 30 mm. Quenching in oil with 870-890 °C + vacation at 630-670 °C, air cooling
-	-	500-680	640-680	10-22	31-66	-	-	-
Steel castings 35HGSL. Normalization at 890-910 °C with following tempering at 670-690 °C, air cooling or partial annealing at 780 °C, cooling with the furnace to 670 °C, air cooling + Tempering in oil 880-900 °C + Vacation
-	630-670	≥590	≥780	≥12	≥30	≥490	223-277	-
Casting a cross section of 30 mm. Quenching in oil with 870-890 °C + vacation at 630-670 °C, air cooling
-	-	435-525	470-640	19-30	44-84	-	-	-
Steel castings 35HGSL. Normalization at 890-910 °C with following tempering at 670-690 °C, air cooling or partial annealing at 780 °C, cooling with the furnace to 670 °C, air cooling + Tempering in oil 880-900 °C + Vacation
-	570-630	≥835	≥980	≥9	≥25	≥294	277-331	-
Casting a cross section of 30 mm. Normalization at 870-890 °C + vacation at 570-600 °C, air cooling
-	-	445-460	725-810	18-22	33-44	-	-	-
-	-	390-435	700-780	12-17	30-48	-	-	-
-	-	350-420	680-750	10-16	19-44	-	-	-
-	-	395-440	730-790	12-22	24-49	-	-	-
-	-	380-425	640-680	19-23	56-68	-	-	-
-	-	335-370	475-500	24-33	68-74	-	-	-

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
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	7800	36	311	-	-
20	215	-	7800	36	311	-	-
100	211	82	-	37	343	118	496
200	203	79	-	38	419	123	504
300	196	76	-	38	504	128	512
400	184	71	-	37	579	133	533
500	174	66	-	35	663	138	554
600	164	62	-	33	824	141	584
700	143	54	-	32	981	144	622
800	125	47	-	30	1133	126	693
900	-	-	-	29	1187	126	693
1100	-	-	-	-	-	133	689

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	limited weldability. The welding process - SMAW. Recommended heating and subsequent heat treatment.
Склонность к отпускной хрупкости	malosana
Flock-sensitive sensitivity	insensitive