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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
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 maxManganese: 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 |
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| 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 | - | - | - | - | - | - | |