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Stainless Steel Castings, Grey Iron Castings, Ductile Iron Castings

Corrosion Resistant Stainless Steel Casting Product

Short Description:

Casting Metals: Corrosion Resistant Stainless Steel 

Casting Manufacturing: Investment Casting (Silica Sol Lost Wax Casting)

Weight: 8.60 kg

Available Heat Treatment: Solid Solution, Annealing, Normalizing, Quenching, Tempering

 

Corrosion resistant steel is also usually called stainless steel. RMC is an investment casting foundry based out of China. We can proceed the following available inspection methods: dimension testing by CMM, non-destructive testing (PT, UT), chemical composition, mechanical properties, hardness testing, air pressure and water pressure. 


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Corrosion-resistant cast steel, also called cast stainless steel, refers to alloy cast steel that exhibits strong resistance to corrosion in a variety of specific corrosive media or an environment where corrosion and mechanical factors coexist. 

Quick Views for Austenitic Stainless Steel
Main Chemical Composition Cr,Ni,C,Mo,Cu,Si,Nb,Ti
Performance Non-magnetic, high toughness, high plasticity, low strength
Definition Stainless steel with austenitic structure at room temperature
Representative Grades 304, 316, 1.4310, 1.4301, 1.4408
Machinability Fair
Weldability Generally very good
Typical Uses Food machines, Hardwares, Chemical Processing...etc

Stainless steel has a minimum chromium content of 10.5%, making it more resistant to corrosive liquid environments and to oxidation. It is highly corrosion resistant and wear resistant, provides excellent machinability, and is well-known for its aesthetic appearance. Stainless steel investment castings are "corrosion-resistant" when used in liquid environments and vapors below 1200°F (650°C) and "heat-resistant" when used above this temperature.

Austenitic stainless steel refers to stainless steel with an austenitic structure at room temperature. Austenitic stainless steel is one of the five classes of stainless steel by crystalline structure (along with ferritic, martensitic, duplex and precipitation hardened). In some areas, the austentite stainless steel is also called the 300 series stainless steel. When the steel contains about 18% Cr, 8%-25% Ni, and about 0.1% C, it has a stable austenite structure. Austenitic chromium-nickel stainless steel includes the famous 18Cr-8Ni steel and the high Cr-Ni series steel developed by adding Cr and Ni content and adding Mo, Cu, Si, Nb, Ti and other elements on this basis. Austenitic stainless steel is non-magnetic and has high toughness and plasticity, but its strength is low, and it is impossible to strengthen it through phase transformation. It can only be strengthened by cold working. If elements such as S, Ca, Se, Te are added, it has good properties of machinability.

Austenitic stainless steel can also produce castings. In order to improve the fluidity of molten steel and improve casting performance, the alloy composition of cast steel should be adjusted by increasing the silicon content, enlarging the range of chromium and nickel content, and increasing the upper limit of the impurity element sulfur.

Austenitic stainless steel should be solid-solution treated before use, so as to maximize the solid solution of various precipitates such as carbides in the steel into the austenite matrix, while also homogenizing the structure and eliminating stress, so as to ensure excellent Corrosion resistance and mechanical properties. The correct solution treatment system is water cooling after heating at 1050~1150℃ (the thin parts can also be air cooled). The solution treatment temperature depends on the degree of alloying of the steel: Molybdenum-free or low-molybdenum steel grades should be lower (≤1100℃), and higher alloyed grades such as 00Cr20Ni18Mo-6CuN, 00Cr25Ni22Mo2N, etc. should be higher (1080~1150) ℃).

Austenitic 304 stainless steel steel plate, which is said to bring strong anti-rust and corrosion resistance, and has excellent plasticity and toughness, which is convenient for stamping and forming. With a density of 7.93 g/cm3, 304 stainless steel is a very common stainless steel, also known as 18/8 stainless steel in the industry. Its metal products are resistant to high temperatures and have good processing properties, so they are widely used in industry and furniture decoration industries and food and medical industries.

precision Investment casting procedure

Equivalent Grade of Stainless Steel

Categories AISI W-stoff DIN BS SS U.N.E. / I.H.A. UNI
Martensitic and Ferritic Stainless Steel 420 C 1.4034 X43Cr16        
440 B/1 1.4112 X90 Cr Mo V18        
- 1.2083 X42 Cr 13 - 2314 F.5263 -
403 1.4000 X6Cr13 403 S 17 2301 F.3110 X6Cr13
(410S) 1.4001 X7 Cr 14 (403 S17) 2301 F.3110 X6Cr13
405 1.4002 X6 CrAl 13 405 S 17 - F.3111 X6 CrAl 13
416 1.4005 X12 CrS 13 416 S 21 2380 F.3411 X12CrS13
410 1.4006 X 10 Cr 13 410 S21 2302 F.3401 X12Cr13
430 1.4016 X6 Cr 17 430 S 17 2320 F.3113 X8Cr17
420 1.4021 X20 Cr 13 420 S 37 2303 F.3402 X20Cr13
420F 1.4028 X30 Cr 13 420 S 45 (2304) F.3403 X30Cr13
(420) 1.4031 X39Cr13 420 S 45 (2304) F.3404 -
431 1.4057 X20 CrNi 17 2 431 S 29 2321 F.3427 X16CrNi16
430F 1.4104 X12 CrMoS 17 - 2383 F.3117 X10CrS17
434 1.4113 X6 CrMo 17 434 S 17 2325 - X8CrMo17
430Ti 1.4510 X6 CrTi 17 - - - X6CrTi17
409 1.4512 X5 CrTi 12 409 S 17 - - X6CrTi12
Austenitic Stainless Steel 304 1.4301 X5 CrNi 18 9 304 S 15 2332 F.3551 X5CrNi18 10
305 1.4303 X5 CrNi 18 12 305 S 19 - - X8CrNi19 10
303 1.4305 X12 CrNiS 18 8 303 S 21 2346 F.3508 X10CrNiS 18 09
304L 1.4306 X2 CrNiS 18 9 304 S 12 2352 F.3503 X2CrNi18 11
301 1.4310 X12 CrNi 17 7 - 2331 F.3517 X12CrNi17 07
304 1.4350 X5 CrNi 18 9 304 S 31 2332 F.3551 X5CrNi18 10
304 1.4350 X5 CrNi 18 9 304 S 31 2333 F.3551 X5CrNi18 10
304LN 1.4311 X2 CrNiN 18 10 304 S 62 2371 - -
316 1.4401 X5 CrNiMo 18 10 316 S 16 2347 F.3543 X5CrNiMo17 12
316L 1.4404 - 316 S 12/13/14/22/24 2348   X2CrNiMo17 12
316LN 1.4429 X2 CrNiMoN 18 13 - 2375 - -
316L 1.4435 X2 CrNiMo 18 12 316 S 12/13/14/22/24 2353 - X2CrNiMo17 12
316 1.4436 - 316 S 33 2343 - X8CrNiMo 17 13
317L 1.4438 X2 CrNiMo 18 16 317 S 12 2367 - X2CrNiMo18 16
329 1.4460 X3 CrNiMoN 27 5 2 - 2324 F.3309 -
321 1.4541 X10 CrNiTi 18 9 321 S 12 2337 F.3553 X6CrNiTi18 11
347 1.4550 X10 CrNiNb 18 9 347 S 17 2338 F.3552 X6CrNiNb18 11
316Ti 1.4571 X10 CrNiMoTi 18 10 320 S 17 2350 F.3535 X6CrNiMoTi 17 12
309 1.4828 X15 CrNiSi 20 12 309 S 24 - - X16 CrNi 24 14
330 1.4864 X12 NiCrSi 36 16 - - - -
Duplex Stainless Steel S32750 1.4410 X 2 CrNiMoN 25 7 4 - 2328 - -
S31500 1.4417 X 2 CrNiMoSi 19 5 - 2376 - -
S31803 1.4462 X 2 CrNiMoN 22 5 3 - 2377 - -
S32760 1.4501 X 3 CrNiMoN 25 7 - - - -
630 1.4542 X5CrNiCNb16-4 - - - -
A564/630 - - - - - -

Ferrous and Non-ferrous Materials for Investment Casting, Lost Wax Casting Process:

  • • Gray Iron: HT150, HT200, HT250, HT300, HT350; GJL-100, GJL-150, GJL-200, GJL-250, GJL-300, GJL-350; GG10~GG40.
  • • Ductile Iron or Nodular Iron: GGG40, GGG50, GGG60, GGG70, GGG80; GJS-400-18, GJS-40-15, GJS-450-10, GJS-500-7, GJS-600-3, GJS-700-2, GJS-800-2; QT400-18, QT450-10, QT500-7, QT600-3, QT700-2, QT800-2;
  • • Carbon Steel: AISI 1020 - AISI 1060, C30, C40, C45.
  • • Steel Alloys: ZG20SiMn, ZG30SiMn, ZG30CrMo, ZG35CrMo, ZG35SiMn, ZG35CrMnSi, ZG40Mn, ZG40Cr, ZG42Cr, ZG42CrMo...etc on request.
  • • Stainless Steel: AISI 304, AISI 304L, AISI 316, AISI 316L, 1.4401, 1.4301, 1.4305, 1.4307, 1.4404, 1.4571 and other stainless steel grade.
  • • Brass, Red Copper, Bronze or other Copper-based alloy metals: ZCuZn39Pb3, ZCuZn39Pb2, ZCuZn38Mn2Pb2, ZCuZn40Pb2, ZCuZn16Si4
  • • Other Materials as per your unique requirements or according to ASTM, SAE, AISI, ACI, DIN, EN, ISO, and GB standards

 

The steps involved in the process or the lost wax casting are:

  • • Create a wax pattern or replica
  • • Sprue the wax pattern
  • • Invest the wax pattern
  • • Eliminate the wax pattern by burning it (inside the furnace or in hot water) to create a mould.
  • • Force molten metal pour into the mould
  • • Cooling and Solidification
  • • Remove sprue from the castings
  • • Finish and polish the finished investment castings

 

 

stainless steel precision casting foundry-China
Investment casting manufacturer_RMC Foundry
Silica Sol Lost Wax Casting Company
stainless investment casting manufacturer-China

Heat Treatment of AISI 316 Stainless Steel Castings:

Heat to 1900°F (1040°C) minimum, holding for sufficient time, quench in water or rapid cool by other means. AISI 316 equal to CF8M/F316 and Chinese Standard 0Cr17Ni12Mo2. AISI 314 is a molybdenum bearing modification of AISI 304 alloy and is the cast equivalent of wrought CF8M Stainless steel. The presence of molybdenum increases the general corrosion resistance and the resistance to pitting by chlorides. The alloy is used in mildly acidic and alkaline conditions and for handling citric, oxalic and phosphoric acids.

lost wax casting supplier_RMC Foundry

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