Areas of use of alloy grade 08H17T

Stainless alloy 08H17T (EI 645) is designed for use in the manufacture of products that work in environments oxidation and chemical equipment. The alloy is also used in places where there is the possibility of pitting corrosion in atmospheric conditions, in addition to the marine environment, as well as in the manufacture of heat exchangers, pipes, welded structures are not exposed to mechanical shock and maintained at temperature not less than -20 ° C, manufacturing equipment, soap, brewing, food processing and light industry, as the cladding layer in the production of hot-rolled corrosion-resistant double-layer sheets.

Tech. conv., GOST for 08H17T.

«Specifications. With special. Finish round, the surface quality of steel.» According to GOST 14955−77

«Range. Rolled steel round varietal hot.» According to GOST 2590−2006

«Range. Rolled steel square profiled hot.» According to GOST 2591−2006

«Specifications. High precision steel profile shapes.» 14−11−245−88

«Variety. Round, square steel forged.» According to GOST 1133−71

«Range. Forged, hot-rolled strip steel tool.» According to GOST 4405−75

«Range. Calibrated round steel.» According to GOST 7417−75

«Range. Square steel calibrated.» According to GOST 8559−75

«Range. Rolled steel strip hot varietal.». According to GOST 103−2006

«Technical. Conditions. Calibrated, profiled steel corrosion-resistant, heat-resistant, heat-resistant.» According to GOST 5949−75

«Range. Hexagon rental calibrated.» According to GOST 8560−78

«Forged steel square, round.» According to GOST 1133−71

«Stamps. Heat-resistant, heat-resistant steel, corrosion-resistant, high-.» According to GOST 5632−72

«Range. Hot rolled steel profiles Allen.» According to GOST 2879−2006

Note.

-Air Temperature intensive scale formation is +900 ° C.

— Ferritic grade corrosion resistant alloy, heat-resistant to temperatures of +850 ° C.

Steel grade 08H17T used as a substitute for steel grades such as: 12Cr18Ni10Ti 12X18H9T, with the same objectives as the brand of steel 12H17, including for welded structures.

Chemical characteristics of the steel 08H17T

Ti	Si	S	P	Mn	Cr	C
5 x C 0, 8	≤ 0,80	≤ 0,035	≤ 0,025	≤ 0,80	16,0−18,0	≤ 0,08

Mechanical properties at elevated temperatures.

tisp., ° C	d5,%	d4	totpusk, ° C	St | S0, 2 MPa	State of delivery	Cross section mm	sB, MPa	d	d10	y,%	KCU, kJ/m2	HB	HRC	HRB	HV	HSh
Long products. Heat to 760 ° C. Cooling air
20	≥ 30						≥ 460
1200	≥ 111						≥ 59
900	≥ 90						≥ 59
800	≥ 54						≥ 78
700	≥ 37						≥ 155
600	≥ 36						≥ 195
500	≥ 35						≥ 245
400	≥ 33						≥ 280
300	≥ 32						≥ 330
200	≥ 31						≥ 390
1100	≥ 110						≥ 59

Mechanical characteristics at temperatures of 20 ° C alloy stainless 08H17T.

Condition of supply	Section	tisp., ° C	totpusk, ° C	St | S0, 2 MPa	sB, MPa	d5,%	d4	d	d10	y,%	KCU, kJ/m2	HB	HRC	HRB	HV	HSh
Billet parts for valves on the basis of CT TsKBA 016−2005. Cooling air temp. 770−780 ° C annealing, cooling air at 780 ° C annealing
	≤ 60			≥ 245	≥ 392	≥ 20				≥ 50	≥ 294	126−197
Billet parts for valves on the basis of CT TsKBA 016−2005. Cooling air temp. 770−780 ° C annealing, cooling air, 780−810 ° C with annealing furnace (vyderzhk.20 h)
	≤ 60			≥ 157	≥ 392	≥ 25				≥ 55	≥ 49	126−197
Cold (0,7−3,9 mm) hot (1,5−3,9 mm) rolled sheet under GOST 5582−75. Vacation annealing temp. 750−780 ° C
					≥ 490	≥ 20
hot-rolled sheet (4,0−25,0 mm) cold-rolled (4.0−5.0 mm) on the basis of GOST 7350−77. Vacation annealing temp. 765−780 ° C, cooling air to the furnace.
					≥ 440	≥ 18
Forged, hot-rolled profiled on the basis of GOST 5949−75. Cooling water, air at 765−785 ° C annealing
	Sample			≥ 245	≥ 390	≥ 20				≥ 50
Hot-rolled seamless pipes as delivered on the basis of GOST 9940−81
	Sample				≤ 441	≥ 17
, Annealing at the temperature. 745−785 ° C (section — wide. Walls). On delivery pipe.
Pipes Hot / d	3,5−32,0				≤ 441	≥ 17
Pipes Cold / A	0,2−22,0				≤ 441	≥ 17

Other additional information.
The level of mechanical properties for wrought, hot-rolled established by agreement with the consumer, as well as the manufacturer on the basis of GOST 5949−75.

Physical characteristics 08H17T

Temperature Life test., In ° C	700	500	400	300	200	100	20	0
Modulus in torsion in shear (G, GPa)
normal elasticity modulus (E, GPa)							206	206
Density (r, kg/m3)							7700	7700
Specific electrical resistivity (R, nom · m)				462		462
Thermal conductivity coefficient (l, W / (m · ° C))							25	25
Specific heat capacity (C, J / (kg · ° C))								462
Linear expansion coefficient in (a, 10−61 / ° C)	12.1		11.9	11.9	11.6	11.4	11.2	10.8

Technological properties of the alloy grade 08H17T.

The tendency to temper brittleness	08H17T has at the temperature. +475 ° C and a penchant long exposure to temper brittleness.
Features of heat treatment	Welded 08H17T products must be subjected to temp. 720−780 ° C annealing for 2 hours and air cooling. Details concerning the ferritic class should be subjected to heating to temp. 760−780 ° C, air cooling and aging of convenience — a maximum thickness of 1 mm alloy 30 min + 1 min to reach the maximum ductility, as well as eliminate the tendency to intergranular corrosion. holiday products carried out at temp. 450−555 ° C is not acceptable — that will lead to «d 475 °-embrittlement.»
Weldability	Welding arc automatic submerged arc ANF-14, AN-26, used wire Sv-05H25N12TYU and 08H20N9G7T. Limited-welded steel. Mechanical satisfactory quality produced during welding products, with negligible thickness of 3 mm.
The temperature forging	Air cooling with cross-sectional area greater than 350 mm. Home — 1220 ° C, the end of — 900 ° C.

Resilience

Transverse specimen. Sheet of 8 mm.	≥ 6	≥ 7	≥ 156
In the state of the supply temperature	-40	-20	+20
The longitudinal sample. Sheet of 8 mm.	≥ 6	≥ 9	≥ 177

Price. Buy.

The company «Avek Global», producing a wide range of steel products 08H17T ready to meet the most challenging demands of customers. The widespread use of products that are made from this alloy is due to the high quality, great variety and reasonable cost. Absolute control of all stages of the process allows the company «Avek Global» guaranteed to produce high-quality steel products. The introduction of modern technology gives us the opportunity in addition to a wide range of the base, which is always in stock of the company, taking orders for the manufacture of metal-to-order, even in case of need of quality steel non-standard options and sizes.