Steel 10KH11N23T3MR (ЭП33; ЭЦ696)

Designation

Name	The value
Designation GOST Cyrillic	10Х11Н23Т3МР
Designation GOST Latin	10X11H23T3MP
Transliteration	10H11N23T3MR
By chemical elements	10Cr11Н23Ti3MoB

Name	The value
Designation GOST Cyrillic	ЭП33
Designation GOST Latin	EP33
Transliteration	EhP33
By chemical elements	-

Name	The value
Designation GOST Cyrillic	ЭЦ696
Designation GOST Latin	ETs696
Transliteration	EhTs696
By chemical elements	-

Description

10KH11N23T3MR steel is used: for the manufacture of springs especially for critical applications operating at elevated temperatures; details of special fasteners limited time operation at temperatures up to +700 °C; the details, which are increased requirements for heat resistance.

Note

Steel heat-resistant austenitic class.
The recommended maximum operating temperature for a limited period of work — +700 °C. the Temperature of beginning of intensive scaling in air +850 °C.

Standards

Name	Code	Standards
Bars and shapes	В22	GOST 1133-71, GOST 2590-2006
Classification, nomenclature and General rules	В30	GOST 5632-72
Bars and shapes	В32	GOST 5949-75, GOST 22411-77, TU 14-1-1239-75, TU 14-1-312-72, TU 14-131-814-90, TU 14-1-3957-85, TU 14-11-245-88, TU 14-1-5162-92
Classification, nomenclature and General rules	В20	OST 1 90005-91
Blanks. Of the workpiece. Slabs	В31	OST 3-1686-90, TU 14-1-1214-75
Thermal and thermochemical treatment of metals	В04	ST ЦКБА 016-2005
Tape	В34	TU 14-1-1008-74
Processing of metals by pressure. Forgings	В03	TU 14-1-1530-75, TU 14-1-2902-80, TU 14-1-2918-80, ST ЦКБА 010-2004
Steel wire medium and high carbon	В72	TU 14-1-929-74
Wire, steel, alloy	В73	TU 3-1027-76

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	Al	V	B	Ti	Mo	W
TU 14-1-2918-80	≤0.1	≤0.01	≤0.02	≤0.6	10-12.5	≤0.6	21-25	Rest	≤0.3	≤0.8	≤0.2	≤0.002	2.6-3.2	1-1.6	≤0.2
TU 14-1-5162-92	≤0.1	≤0.01	≤0.025	≤0.6	10-12.5	≤0.6	21-25	Rest	≤0.3	≤0.8	≤0.2	≤0.002	2.6-3.2	1-1.6	≤0.2
TU 14-1-929-74	≤0.1	≤0.01	≤0.02	≤0.6	10-12.5	≤0.6	21-25	Rest	-	≤0.8	-	≤0.02	2.6-3.2	1-1.6	-

Fe is the basis.
According to GOST 5632-72, TU 14-1-312-72, TU 14-1-5162-92 and TU 14-1-2902-80, the chemical composition is given for steel grades Х12Н23Т3МР and 10Х11Н23Т3МР-ВД.
According to TU 14-1-2918-80 the chemical composition is given for steel grades 10Х11Н23Т3МР-ВД.
According to TU 14-1-929-74, the chemical composition is given for steel grades 10Х11Н23Т3МР (Х12Н22ТЗМР; ЭП33), 10Х11Н23Т3МР-ВД (ЭП33-ВД). The content of residual tungsten and copper - according to GOST 5632.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	d₄	y, %	KCU, kJ/m²	HB, MPa
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
-	-	≥1080	-	-	-	-	-
-	-	≥1180	-	-	-	-	-
Blank pieces of pipe fittings and welded assemblies at ST CKBA 016-2005. Quenching in oil with 1090-1110 °C (exposure 1-2 h) + Aging at 770-790 °C (aging 16 h), air cooling + Ageing at 640-660 °C (aging 16 h), air cooling
≤100	≥784	≥980	≥20	-	≥25	≥490	285-341
Tape supplied on the other 14-1-1008-74
-	-	≥740	-	≥25	-	-	-
Forgings, rods, rolled and forged, washers. Quenching with 1100-1170 °C (delay of 2-5 h), air cooling or oil + aged at 750-800 °C (aging from 16 to 25 h), air cooling
	≥590	≥880	≥8	-	≥12	≥294	255-321
Forgings, rods, rolled and forged, washers. The quenching 950-1050 °C (delay of 2-5 h), cooling in oil + Aging at 730-780 °C (aging 16 HR) + Additional aging at 600-650 °C (aging 10-16 h), air cooling
	≥685	≥980	≥12	-	≥14	≥294	302-363
Wire nagarebana on the other 3-1027-76 in the delivery condition. Aging at 700-720 °C (maintained for 5 h), air cooling
1	-	≥1370	-	-	-	-	-
1-2	-	≥1130	-	-	-	-	-
1-2	-	≥1320	-	-	-	-	-
Wire cold-drawn at THAT 14-1-929-74. Aging at 690-710 °C (maintained for 5 hours), air cooling. In the column of the delivery Condition indicated the degree of work hardening of the wire in %
	-	≥980	-	-	≥30	-	-
	-	≥1080	-	-	≥30	-	-
Bars with special surface finishing of steel 10KH11N23T3MR-VD (ЭП33-VD) TU 14-1-5162-92. Aging at 690-710 °C (maintained for 5 hours), air cooling.
	-	≥980	-	-	≥30	-	-

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
y	The relative narrowing
KCU	Toughness
HB	Brinell hardness number

Technological properties

Name	The value
Particularities of production of goods	Wire on the other 14-1-929-74 put in cold-worked condition with a degree of autofrettage 20±2 % ("PN") and 40±4 % ("N"). The degree of work hardening is discussed in the order. Before cold deformation wire (workpiece) is subjected to annealing in air with temperature 1090-1110 °C. the Wire comes in a bleached condition. The surface of the wire should be flat and smooth, without cracks, shells, sunsets, wooloowin, scratches delamination and traces of Pererva. Traces the technological lubricant on the surface of the wire are not allowed. Allowed without scale gray color of the surface. On the surface of the wire allowed some small risks, the depth of which does not exceed half the tolerance on the diameter.