Stainless Steel Casting Open Impeller for Pump

Stainless Steel Casting Open Impeller for Pump

Material: AISI 316 (CF8M) Cast Stainless Steel
Process: Lost Wax Investment Casting (silica Sol)
Weight: 3.90 kg
Application: Centrifugal Pump
Dynamic Balancing: Available
Machining: Available

CF8M / AISI 316 Stainless Steel Impeller by Lost Wax Casting Process and CNC Machining

Description

CF8M / AISI 316 Stainless Steel Impeller by Lost Wax Casting Process and CNC Machining

CF8M is a cast austenitic stainless steel which covered by ASTM A351, ASTM A743 and ASTM A744 standard. CF8M equal to SS 316/F 316 and Chinese Standard 0Cr17Ni12Mo2. CF8M is a molybdenum bearing modification of CF8 alloy and is the cast equivalent of wrought AISI 316 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. Stainless steel CF8M is mostly the same as SS 316, F 316 and TP 316. But they are defined in different standards, and their chemical and mechancial properties are a little different too. CF8M is defined in ASMT A351, ASMT A743 and ASTM A744, which is for casting purpose only. SS 316 is defined in ASTM A240 and ASTM A276, it's for plate, sheet, strip or stainless steel bars. Another grade is named as F316, which is from ASTM A182 for forged parts only. TP316 will be found in ATSTM A376 for pipe only. The main applications of CF8M cast stainless steel cover: impellors, propellers, pump casings, valve bodies and press plates. The usual heat treatment for CF8M is solid Solution by heating to more than 1900 °F (1040 °C), holding for sufficient time and then quenching in water or rapid cool by other means.



Chemical Composition of CF8M Cast Stainless Steel:

Carbon: 0.08 max
Manganese: 1.50 max
Silicon: 1.50 max
Sulfur: 0.040 max
Phosphorus: 0.040 max
Chromium: 18.0-21.0
Nickel: 9.0-12.0
Molybdenum: 2.0-3.0

Mechanical Properties of CF8M Cast Stainless Steel:

Tensile Strength: min 70 ksi (485 Mpa)
Yield Strength: min 30 ksi (205 Mpa)
Elongation in 2 inch. or 50 mm: min 30.0%



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 - - - - - -