08Cr17t - 1.4520 - aisi 430Ti pipe

International Equivalent

Mark Analogue W. Nr. Aisi Uns En Order
08Х17Т EI645 1.4510 430Ti X6CrTi17 Delivery from the stock, in stock

Grade 08Cr17T (EI 645).

Refers to heat-resistant corrosion-resistant steels of ferrite class. Intensive scale formation in the air begins at temperatures above 900 °C. It is used in the manufacture of chemical apparatus and parts used in oxidizing environments. This steel is resistant to the action of atmospheric and soil moisture, the action of sea water, where pitting corrosion is possible. It is used in production of heat exchangers, welded structures, pipes not subjected to impact mechanical loads and operated at temperatures not lower than -20 °С, for production of equipment in brewing, food, soap, light industries, as a cladding layer when rolling two-layer hot-rolled corrosion-resistant sheets. Analogues: 12Х18Н10Т and 12Х18Н9Т, 12Х17, including for welded structures.

Production is regulated by the following GOST:

1133-71 "Assortment. Round and square forged steel.

4405-75 "Assortment. Forged and hot-rolled tool steel strips".

2590-2006 "Sections. Hot-rolled round steel sections".

2591-2006 "Assortment. Hot-rolled square steel sections".

7417-75 "product range. Round calibrated steel.

8559-75 "product range. Calibrated square steel.

8560-78 "product range. Hexagonal calibrated steel product.

1133-71. "Forged square and round steel."

5632-72 "Grades. Heat-resistant and heat-resistant alloys, corrosion-resistant and high-alloy steels".

103-2006 "Assortment. Hot-rolled steel long steel strip sections".

2879-2006 "product range. Hot-rolled hexagonal rolled section steel".

14 955-77 "Т. У. Quality roundsteel with special surface finish".

5949-75 "Т. У. Steel calibrated and section of corrosion-resistant, heat-resistant and heat-resistant.

TU 14-11-245-88 "Profiled steel shapes of high precision.

Percentage composition

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

Mechanical characteristics of 08X17T alloy at 20 °C.

Delivery condition Section, mm temperature, °C temperature,°C St|S0,2, MPa sB, MPa d5,% d4 d d10 y ,% KCU, kJ/m2 HB HRC HRB HV HSh
≥490 ≥20
≥440 ≥18
Sample ≥245 ≥390 ≥20 ≥50
Sample ≤441 ≥17
H/d pipes 3,5-32,0 ≤441 ≥17
Tubes х/д 0,2-22,0 ≤441 ≥17

Mechanical properties at elevated temperatures.

Delivery condition Section, mm sB, MPa Tip,°C St|S0,2 MPa tisp.,°C d5,% d4 d d10 y ,% KCU, kJ/m2 HB HRC HRB HV HSh
≥460 20 ≥30
≥59 1200 ≥111
≥59 900 ≥90
≥78 800 ≥54
≥155 700 ≥37
≥195 600 ≥36
≥245 500 ≥35
≥280 400 ≥33
≥330 300 ≥32
≥390 200 ≥31
≥59 1100 ≥110

Note - For forged and hot-rolled sections, the level of mechanical characteristics in accordance with GOST 5949-75 is set by agreement with the consumer and the manufacturer.

Physical properties of 08Cr17T alloy

Temperature of test, in °С 700 500 400 300 200 100 20 0
Torsional shear modulus of elasticity in (G, GPa)
Modulus of normal elasticity in (E, GPa) 206 206
Density in (r, kg/m3) 7700 7700
Oud. Electrical resistance in (R, Nm - m) 600 600
Thermal conductivity coefficient in (l, W/(m - °C)) 25 25
Specific heat capacity in (C, J/(kg - °C)) 462 462
Linear expansion coefficient in (a, 10-61/°C) 11 10,5 10,5 10,5 10 10

Technological characteristics of 08Cr17T alloy.

Features of heat treatment - Details of the steel ferritic class hardened at t ° 760-780 ° C with an ageing rate of 30 min + 1 min per 1 mm of thickness of the material with cooling in water to achieve maximum ductility and eliminate the tendency to fire. Welded steel items of 08Cr17T grade are annealed at 720-780°С for 1-2 hours with air cooling. Carry out tempering of products at temp. 450-550 ° C is not allowed, because this can lead to a "475-degree brittleness.

Tendency to temper embrittlement - Steel is prone to temper embrittlement at temperatures of. 475 °C during prolonged curing.

Weldability - The steel is limited weldable. Satisfactory mechanical properties can be obtained when welding items that are small in thickness up to 2-3 mm. For automatic submerged-arc welding under flux ANF-14 and AN-26 use wire grades Sv-05H25N12Tu or Sv-08H20N9G7T.

Forging temperature - at the beginning - 1220 °C, at the end - 900 °C. With a cross-section of up to 350 mm, air cooling.

Additional information about the alloy 08Cr17T.

Impact toughness

Longitudinal specimen. Sheet of 8 mm. Delivery condition temperature Sample cross. Sheet 8 mm.
≥6 -40 ≥6
≥9 -20 ≥7
≥177 +20 ≥156

Buy at the best price

Evek GmbH stocks a wide range of rolled products of 08Cr17T grade. Our representative offices are located. You can make a purchase without leaving your office, through the Company's website. The popularity of 08Cr17T grade products is explained by a variety of assortment and low price. All the products have the highest quality. Technological completeness of each stage of production makes it possible for us to carry out individual orders if you are not satisfied with the basic execution of the product. We carry out high quality individual orders of non-standard parameters, the timing of their implementation is minimal. In case of bulk purchases we provide discounts.