CF8M / 1.4408 Stainless Steel Investment Casting

CF8M (ASTM A351 / A743) and 1.4408 – GX5CrNiMo19-11-2 (EN 10283) are the cast counterparts of 316 stainless steel. The molybdenum addition gives better resistance to chlorides and pitting than CF8 / 1.4308, which is why CF8M is one of the most frequently specified alloys for stainless steel investment castings. BRK Metal casts CF8M / 1.4408 as a regular production alloy, for parts from 1 g to 25 kg.

Designations and equivalents

Standard	Designation	Note
ASTM A351 / A743	CF8M	Cast grade, solution annealed
EN 10283 / EN 10213	1.4408 – GX5CrNiMo19-11-2	European cast grade
AISI (wrought)	316	Nearest wrought equivalent, not identical

Chemical composition (wt. %)

Element	CF8M (ASTM A351)	1.4408 (EN 10283)
C	≤ 0.08	≤ 0.07
Cr	18.0 – 21.0	18.0 – 20.0
Ni	9.0 – 12.0	9.0 – 12.0
Mo	2.0 – 3.0	2.0 – 2.5
Mn	≤ 1.50	≤ 1.50
Si	≤ 1.50	≤ 1.50

Mechanical properties (solution annealed)

Property	CF8M (ASTM)	1.4408 (EN)
Tensile strength Rm	≥ 485 MPa	440 – 640 MPa
Yield strength Rp0.2	≥ 205 MPa	≥ 210 MPa
Elongation A	≥ 30 %	≥ 30 %

Values are minimums or ranges from the referenced standards for orientation; the current edition of the standard and your drawing requirements apply.

Typical applications

Pump and valve components, fittings and flanges, food and beverage equipment, process and chemical equipment, marine hardware and medical device parts. See our sector pages for application examples.

Design and production notes

Heat treatment: CF8M is supplied solution annealed to restore corrosion resistance after casting.
Magnetism: cast austenitic grades contain some delta ferrite, so CF8M castings can be slightly magnetic, unlike fully annealed wrought 316.
Tolerances: see our dimensions and tolerances page (VDG P690).
Finishing: machining and surface treatments such as electropolishing can be supplied with the casting.

Compare CF8M with other alloys on the material options page, or read more about stainless steel investment casting. For CF8 / 1.4308 see CF8 / 1.4308 investment casting.

How to request a quote

Send a 2D drawing (PDF) and, if available, a 3D model (STEP), the alloy and condition you need, annual and per-order quantities, and any machining, coating or documentation requirements. Prices are calculated per part; the minimum order quantity depends on part size and geometry. Contact us to send your request.

FAQ

Is CF8M the same as 316 stainless steel?

CF8M is the cast equivalent of 316. Its composition is close to 316 but not identical; for example, cast grades contain some ferrite. When a drawing calls for 316 on a cast part, CF8M or 1.4408 is normally specified.

Is CF8M / 1.4408 magnetic?

It can be slightly magnetic because of the delta ferrite in the cast structure. If low magnetic permeability is required, this should be stated in the request.

Which part sizes can BRK Metal cast in CF8M?

We cast CF8M / 1.4408 parts from about 1 g up to 25 kg. Feasibility depends on geometry and wall thickness, which we review on the drawing.

Contact

You can contact us either by phone or by email. Our team will get back to you as soon as possible.