What is the difference between CF8M and SS316?
Sometimes we regard CF8M equals to Stainless steel 316. Actually, SS316 is the general name for 316 stainless steel.
CF8M is a pressure-bearing component, austenitic stainless steel casting. Executive standard: ASTM A351-2018. CF8M is one type of 316 stainless steel
The chemical composition of CF8M is as follows:
| Content | C | Si | Mn | P | S | Ni | Cr | Mo |
| Min. | – | – | – | – | – | 9.0 | 18.0 | 2.0 |
| Max. | 0.08 | 1.5 | 1.5 | 0.040 | 0.040 | 12.0 | 21.0 | 3.0 |
CF8M vs SS316 Standard
CF8M is defined in ASMT A351, ASMT A743, and ASTM A744, which is for casting purposes only.
SS316 is defined in ASTM A240 and ASTM A276, it’s for plate, sheet, strip or stainless steel bars.
If they used AISI 316. The difference is clear too.
AISI 316 belongs to American Standard austenitic stainless steel. Executive standard: ASTM A 959-2004. The chemical composition of AISI 316 is as follows:
| Content | C | Si | Mn | P | S | Ni | Cr | Mo |
| Min. | – | – | – | – | – | 10.0 | 16.0 | 2.0 |
| Max. | 0.08 | 1.0 | 2.0 | 0.045 | 0.03 | 14.0 | 18.0 | 3.0 |
From the chemical composition of the above two, the chemical composition difference between CF8M and AISI 316 is clear.
CF8M vs SS316 Casting
JC Casting is a stainless steel investment casting manufacturer in China. CF8M and SS316 are the popular raw materials for us and for our customers. If you have stainless steel casting inquiry, kindly email us at info@jccasting.com. Let us clear the product details and standards.