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Austenitic Stainless Steel Investment Cast Alloy Compositions


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Austenitic Stainless Steel Investment Casting Alloy Chemistry
  Carbon
Min-Max		 Manganese
Min-Max		 Silicon
Min-Max		 Chromium
Min-Max		 Nickel
Min-Max		 Molybdenum
Min-Max		 Phosphorus
Max		 Sulfur
Min-Max		 Copper
Min-Max		 Iron Other Melting Range
Alloy Type
CF-16Fa (303) Investment Cast 0.16 Max 1.5 Max 2.0 Max 18.0 -21.0 9.0-12.0 0.40-0.80 0.04 0.20-0.40   Bal.   2550-2650
CF-8 (304) Investment Cast 0.08 Max 1.5 Max 2.0 Max 18.0-21.0 8.0-11.0   0.04 0.04 Max   Bal.   2500-2650
CF-3 (304L) Investment Cast 0.03 Max 1.5 Max 2.0 Max 17.0-21.0 8.0-12.0   0.04 0.04 Max   Bal.   2550-2650
CF-8M (316) Investment Cast 0.08 Max 1.5 Max 2.0 Max 18.0-21.0 9.0-12.0 2.0-3.0 0.04 0.04 Max   Bal.   2500-2550
CF-3M (316L) Investment Cast 0.03 Max 1.5 Max 1.5 Max 17.0-21.0 9.0-13.0 2.0-3.0 0.04 0.04 Max   Bal.   2500-2550
316/Non Mag Investment Cast 0.08 Max 2.0 Max 1.0 Max 16.0-18.0 11.0-14.0 2.0-3.0 0.04 0.04 Max   Bal.   2450-2500
HT (330) Investment Cast 0.35-0.75 2.00 Max 2.50 Max 15.0-19.0 33.0-37.0 0.50 0.04 0.04 Max   Bal.   2400-2500
CF-8C (347) Investment Cast 0.08 Max 1.5 Max 2 Max 18.0-21.0 9.0-12.0   0.04 0.04 Max   Bal. Cb (Nb) = (8xC Min.0% Max 2500-2600
CN-7M (Alloy20) Investment Cast 0.07 Max 1.50 Max 1.50 Max 19.0-22.0 27.5-30.5 2.00-3.00 0.04 0.04 Max 1.5-2.0 Bal.   2500-2550
CF10SMnN Investment Cast 0.10 Max 7.00-9.00 3.50-4.50 16.0-18.0 8.0-9.0 - 0.060 0.04 Max   Bal. Nitrogen 0.08-0.18 2450-2550

 

Austenitic Stainless Steel Investment Cast Alloy Properties

 

Austenitic Stainless Steel Investment Cast Alloy Properties
  Condition Tensile Strength 0.2% Yield Strength % Elongation Range (2.5 cm or 1”) Hardness RB Max
Alloy Type English PSI Metric MPa English PSI Metric MPa  
CF-16Fa (303) Investment Cast Solution Annealed 70-85,000 483-586 30-40,000 207-276 25-40 90
CF-8 (303) Investment Cast Solution Annealed 70-85,000 483-586 30-50,000 207-345 30-50 90
CF-3 (304L) Investment Cast Solution Annealed 70-85,000 483-586 30-50,000 207-345 30-50 90
CF-8M (316) Investment Cast Solution Annealed 70-85,000 483-586 30-50,000 207-345 30-50 90
CF-3M (316L) Investment Cast Solution Annealed 70-85,000 483-586 30-50,000 207-345 30-50 90
316 Non-Magnetic Investment Cast Solution Annealed 70-85,000 483-586 30-50,000 207-345 30-50 90
HT (330) Investment Cast As Cast 65-75,000 448-517 - - 4-20 90
CF-8C (347) Investment Cast Solution Annealed 70-85,000 483-586 30-40,000 207-276 30-40 90
CN-7M (Alloy 20) Investment Cast Solution Annealed 62-80,000 427-552 25-35,000 172-241 25-40 90
CF10SMnN Investment Cast Solution Annealed 85-100,000 586-689 42-55,000 290-379 30-50 100

 

Mechanical Property values are for information only. They are deterMin from test bars and do not necessarily apply to castings. Any requirements for mechanical properties that are beyond the above information must be discussed with and agreed to by WPCC.

Cross-Index of Various Alloy Designations for Austenitic Stainless Steel Investment Cast Alloys

 

Austenitic Stainless Steel Alloy Cross-Index
Alloy or Type AMS Other Designation
303 Investment Cast 5341 ASTM A743 CF-16F
304 (CF-8) Investment Cast 5370 ASTM A743 CF-8
304L (CF-3) Investment Cast 5371 ASTM A743 CF-3
316 (CF-8M) Investment Cast 5360 ASTM A743 CF-8M
316L (CF-3M) Investment Cast   ASTM A743 CF-3M
316 Non-Magnetic Investment Cast    
330 HT Investment Cast   ASTM A297 HT
347 (CF-8C) Investment Cast   ASTM A743 CF-8C
Alloy 20 (CN-7M) Investment Cast   ASTM A743 CN-7M
CF-10SMnN Investment Cast   * Nitronic 60® ASTM A743 CF-10SMnN

 

* Nitronic 60® is a registered trademark of Armco Inc.


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