12H17 pipe, wire, round
Mark 12H17 (or PE 17)
It refers to a type of stainless steel for the manufacture of kitchen utensils, household items, equipment, light and food industry. Used for the manufacture of fasteners, bushings, rollers, vessels, operated in dilute acetic acid, nitric acid, citric acids, in salt solutions with oxidative properties in the manufacture of pipes and heat exchangers.
— In the gas medium to t ° + 850 ° C.
— In air t ° intensive scaling begins above 900 ° C +
— It is generally used in the annealed condition
— The alloy is not recommended for welded structures.
Production of semi-finished brand 12H17 normalized following GOST
5632−72 «Stamps. Heat-resistant alloys and heat-resistant, corrosion-resistant and high. «
1133−71 «Range. Steel square and round forged. «
4405−75 «Range. Hot forged bars made of tool steel «.
2590−2006 'Range. Hot-round «steel profiles.
2591−2006 'Range. Long steel hot rolled square. «
7417−75 «Range. Calibrated round steel. «
8559−75 «Range. Steel calibrated square. «
8560−78 «Range. Sized rolled hex. «
103−2006 «Range. Hot-rolled steel graded stripe. «
2879−2006 'Range. Hot-rolled hex profiled steel. «
5949−75 «Specifications. Calibrated and profiled steel corrosion-resistant, heat-resistant and heat-resistant. «
14 955−77 «TW Steel with spetsotdelkoy round surface quality.»
TU 14−11−245−88. «The steel shaped profiles of high precision».
The percentage of
Mechanical characteristics of the brand 12H17 alloy at a temperature of 20 ° C.
|delivery condition||Cross-section, mm||tisp., ° C||totpusk, ° C||St | S0,2, MPa||sB, MPa||d5,%||d4||d||d10||y,%||KCU, kJ / m2||HB||HRC||HRB||HV||HSh|
|Pipes g / d||3,5−32,0||≤441||≥17|
|Tubes x / d||0,2−22,0||≤441||≥17|
The mechanical properties at elevated temperatures
|delivery condition||Cross-section, mm||sB, MPa||totpusk, ° C||St | S0,2, MPa||tisp., ° C||y,%||d4||d||d10||d5,%||KCU, kJ / m2||HB||HRC||HRB||HV||HSh|
The physical characteristics of the alloy brand 12H17
|Temperature isp., ° C||1000||900||800||700||600||500||400||300||200||100||20||0|
|Modulus of elasticity in the process of shifting to the torsion (G, GPa)||61||69||85||78||82||85||89||93|
|The module of elasticity in the (E, GPa)||148||165||182||192||201||211||219||227||232||232|
|Density (r, kg / m3)||7720||7720|
|Houde. in electrical resistance (R, nom · m)||1160||1150||1110||1030||950||850||770||680||610||560||560|
|Thermal conductivity in the (l, W / (m · ° C))||26||26||25||24||24|
|Specific heat capacity (C, J / (kg · ° C))||462||462|
|The coefficient of linear expansion (a, 10−61 / ° C)||12.1||11.9||11.9||11.6||11.4||11.2||10.8||10.5||10.4|
Technological parameters of the alloy 12H17
Properties Hardness -To improve processing and mechanical characteristics set CKBA ST 010 for maximum corrosion resistance, the preform is annealed. In order to decrease the residual magnetic induction in the yoke of the electromagnets are subjected to prolonged annealing the preform. Long-term annealing of blanks gives the necessary magnetic properties of steel 12H17. When the magnetic residual induction Bv 0.3 T, the coercive force Hc of 0.23 kA / m; Hm at 20 ka / and maximum saturation flux density Bs is 1.6 T. Welded assemblies for the brand 12H17 poysheniya corrosion resistance of annealed according to the following regime: heating to 780−800 ° C, holding — 2−3 hours, cooling the air. In the absence of requirements for resistance to intergranular corrosion; heating to 775−820 ° C, air cooling, if necessary resistance to intergranular corrosion, endurance 8 hours.
The tendency to temper brittleness — Steel has a tendency at +475 ° C and long exposures to temper brittleness.
Weldability — Slozhnosvarivaemaya. Types of welding: Ards, RDS. Recommended subsequent heat treatment.
forging temperature — Early — 1250 ° C, at the end of — 900 ° C. In section up to 350 mm — air cooling.
Other information about the alloy 12H17
The temperature of the critical points:
|Temperature ° C||Critical point|
|heat treatment mode. Delivery Status.||HRB||HRC core||HRC surface||HV||HB||HSD|
|Rental hot-rolled and forged. Vacation or a joke. GOST 5949−75.||126−197|
|The temperature in the delivery condition||-thirty||20||-70|
|As supplied long products||≥60||≥340||≥30|
All submitted articles are certified brand 12H17. The technical documentation includes data on the chemical composition, limiting the percentage of impurities; mechanical properties of products. We can buy in bulk, any semi-finished products for large-scale productions. We also offer optimal conditions for retail customers. High level of service and efficiency of service are the face of our company.
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