Steel 36KH2N2MFA

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 36KH2N2MFA

Steel 36KH2N2MFA: brand of steels and alloys. Below is a systematized information on the purpose, chemical composition, types of supplies, substitutes, temperature of critical points, physical, mechanical, technological and casting properties for the grade — Steel 36Kh2N2MFA.

General information of steel 36Kh2N2MFA

Substitute brand

steel 37HN3MFA.

Delivery type

Long products, including shaped: GOST 4543−71, GOST 2590−71, GOST 2591−71, GOST 2879−69. Calibrated bar GOST 4543−71, GOST 7417−75, GOST 8559−75, GOST 8560−78. Polished bar and silver bar GOST 4543−71, GOST 14955−77. Strip GOST 103−76. Forgings and forged billets GOST 1133−71, GOST 8479−70. Pipes OST 14−21−77.

Application

For large critical parts such as discs, fastening bolts, etc.

Chemical composition of steel 36Kh2N2MFA

Chemical element	%
Vanadium (V)	0.10−0.18
Silicon (Si)	0.17−0.37
Manganese (Mn)	0.25−0.50
Copper (Cu), no more	0.30
Molybdenum (Mo)	0.30−0.40
Nickel (Ni)	1.30−1.70
Sulfur (S), no more	0.025
Carbon (C)	0.33−0.40
Phosphorus (P), no more	0.025
Chromium (Cr)	1.30−1.70

Mechanical properties of steel 36X2H2MFA

Mechanical properties

Heat treatment, delivery condition

Section, mm

σ _0.2, MPa

σ _B, MPa

δ ₅ ,%

ψ,%

KCU, J / m ²

Bar. Hardening 850 ° С, oil. Vacation 600 ° C, air.

1080

1180

Forgings. Hardening. Vacation.

KP 640

500−800

640

785

ten

thirty

248−293

KP 685

500−800

685

835

ten

thirty

262−311

KP 735

300−500

735

880

eleven

thirty

277−321

KP 785

100−300

785

930

eleven

293−331

KP 785

300−500

785

930

ten

thirty

292−331

Mechanical properties depending on the tempering temperature

vacation t, ° С	σ _0.2, MPa	σ _B, MPa	δ ₅ ,%	ψ,%	KCU, J / m ²	HRC _e
Hardening 850 ° С, oil.
250	1460	1710	ten	45	56	49
300	1440	1620	ten	47	52	47
400	1350	1450	ten	42	41	44
500	1220	1320	12	45	69	40
600	1020	1120	sixteen	64	108	35

Mechanical properties depending on the section

Heat treatment, delivery condition	Section, mm	σ _0.2, MPa	σ _B, MPa	δ ₅ ,%	ψ,%	KCU, J / m ²
Hardening 860 ° C, oil. Vacation 600 ° C, air.
Sample cutting location — center	50	1060	1180	17	56	123
Sample cutting location — center	80	920	1020	sixteen	53	82
Sample cutting location — center	200	890	1040	sixteen	50	64
Sample cutting location — edge	200	940	1080	sixteen	53	73
Hardening 860 ° C, water / oil. Vacation 600 ° C, air.
Sample cutting location — center	120	1080	1190	fifteen	53	91
Sample cutting location — center	160	1000	1140	fourteen	52	85
Sample cutting location — edge	160	1080	1190	fifteen	56	101
Sample cutting location — center	240	900	1050	fifteen	53	73
Sample cutting location — edge	240	1080	1180	sixteen	53	97

Technological properties of steel 36X2N2MFA

Forging temperature

Beginning 1240, end 780. Sections up to 50 mm are cooled in boxes, 51−700 mm are subjected to low-temperature annealing with one supercooling.

Weldability

difficult to weld.

Tendency to release ability

not inclined

Flock sensitivity

sensitive

Temperature of critical points of steel 36Kh2N2MFA

Critical point	° C
Ac1	740
Ac3	780
Ar3	400
Ar1	300

Impact strength of steel 36Kh2N2MFA

Impact strength, KCU, J / cm ²

Delivery status, heat treatment	+20	-20	-40	-60	-80
Hardening 850 С, oil. Vacation 550 S.	78	71	64	53	48
Hardening 850 С, oil. Vacation 600 C.	110	101	90	74	66

Short-term thermal strength of steel 36Kh2N2MFA

Test temperature, ° С	s _0.2, MPa	σ _B, MPa	d ₅ ,%	y,%
100	1080	1190	12	57
200	1010	1150	thirteen	57
300	960	1070	thirteen	59
400	920	980	fifteen	63
500	780	830	fourteen	74
600	490	560	23	86
700	170	200	38	-

Physical properties of steel 36H2N2MFA

Test temperature, ° С	20	100	200	300	400	500	600	700	800	900
Normal elastic modulus, E, GPa	212	204	198	186	173	166	156	139	127
Torsional shear elastic modulus G, GPa	84	80	78	74	68	65	61	53	48
Thermal conductivity coefficient W / (m ° С)	36	36	35	35	34	33	31	thirty	29
Ud. electrical resistance (p, Nom. m)	278	335	432	517	613	720	825	940
Test temperature, ° С	20−100	20−200	20−300	20−400	20−500	20−600	20−700	20−800	20−900	20−1000
Linear expansion coefficient (a, 10−6 1 / ° С)	12.5	12.8	13.3	13.5	14.0	14.3	14.5	11.0
Specific heat (C, J / (kg ° C))	496	508	525	538	567	601	672	697

Steel 36KH2N2MFA

Description