12Х15Г9НД.

This is a chromium-manganese stainless steel with low nickel content. It contains 14−16.5% Cr and up to 0.14% carbon. The alloy is alloyed with manganese 8,5−10,5%, copper 2%, nickel 1−1,5%, silicon 0,75%, thousandths of sulfur and phosphorus. The rest is iron.

High-strength stainless steel grade 12Х15Г9НД has lower content of nickel that makes it more stable in the environments containing sulfur. This steel is recommended as a material for wide products operating in slightly aggressive environments and in the open air.

Percentage composition

Processing

The metal lends itself to forging and upsetting with ease. Parts are cooled in air. Metal has high strength and ductility when machined in the cold state. It withstands the bend test corresponding to GOST 14 019−2003. The steel hardens and deforms like steel 12X18H10T during cold working.

Weldability .

The argon-arc welding with semi-automatic wire 08Х20Н9Г7Т, 08Х21Н10Г6 under flux AN-48, using welding electrodes NII-48G, GS-1, DS-12. Welded seams are resistant to intergranular corrosion.

Properties

High resistance to oxidation, ductility, easy deformation, the possibility of deep drawing, good weldability — allows the use of steel in the same equipment as the chromium-nickel austenitic grades. There is no change in ductility and plasticity when the temperature drops, which is characteristic of cold brittleness. Its absolute biological inertness makes it popular in the food industry. In terms of mechanical properties, this steel is a stronger and harder material compared to the 12X18H10T grade. The scale forming temperature is 800 ° C. When heated directly, the tarnishing color was observed in the range from 550 to 800 °C.

Corrosion resistance

High resistance in solutions containing hydrogen sulfide at a saturation of 2.5 g/l, with a corrosion rate of less than 0.0135 mm/year. In humid hydrogen sulfide and ammonia atmospheres corrosion rate up to 0.005 mm/year. In aqueous ammonia solutions at 20 °C, corrosion rate is up to 0.006 mm/year; at 90 °C, up to 0.097 mm/year. In mixtures of aliphatic hydrocarbons at t ° 20−90 ° C corrosion rate up to 0.003 mm / year. Steel is resistant in a food environment (wine, beer, juice), in water vapor, at temperatures up to 600 ° C, in solutions of 10% nitric and sulfuric acids and 40% phosphoric acid at t ° 85 ° C. According to the Central Research Institute of Corrosion: Corrosion endurance limits of steel in a 3% solution of NaCl = 200 MPa, which exceeds the mechanical properties of grade 12Х18Н10Т.

Application of

Used by the food industry for non-loaded or low-loaded parts: metal utensils, household kitchen utensils, trays, knives, fruit vases, coatings for cutting tables; for water containers, thermoses, flasks. For household appliances: stoves; washing machine drums, steel fittings (handles, hinges for doors, etc .). In construction: pipes, window and door frames, handrails, bins, etc. Transport: car accessories: window brush holders, bumpers, etc .

Supply

The steel grade 12Х15Г9НД is certified. The technical documentation includes data on the chemical composition, the limiting percentage of impurities; mechanical properties of products. From us you can buy in bulk any semi-finished products for large-scale production. We also offer optimum conditions for retail buyers. The high level of service and responsiveness of service is the face of our company.

Buy at the best price

Stainless steel alloys are always in stock of Evek GmbH at the best price. It is formed taking into account the European rates for non-ferrous metals without including additional costs. We supply certified products of domestic and foreign producers. Cooperation with us has a number of advantages. Our specialists will be happy to provide advice on purchasing any alloys, the correct choice of which will depend on the performance and durability of the equipment. We will help to determine not only the optimum parameters of the product, but also offer the best price.