What is EN 1.4408 material?

What is 1.4408 material?
The primary equivalent standard for EN 1.4408 is the American standard ASTM A351 CF8M (J92900), representing the same cast austenitic stainless steel. Other equivalent grades include China's GB/T 12230 CF8M, Japan's JIS SCS14A, and the UK's BS3100 316C12. This material is also known as GX5CrNiMo19-11-2 under European standards. It is widely used in corrosion-resistant stainless steel castings, particularly for valves, pumps, flanges, and marine components.

Standard	Equivalent Grade
EN / DIN	1.4408 / GX5CrNiMo19-11-2
AISI / ASTM	316L (cast equivalent: ASTM A351 CF8M)
UNS	J92900 (CF8M), or S31603 (wrought equivalent)
JIS	SUS316LC (Cast)
ISO	G-X5CrNiMo19-11-2 (ISO 11971)

Note: 1.4408 is a cast steel, so although chemically similar to 316L, its mechanical properties and microstructure may differ due to the casting process.

1.4408 Chemical Composition

Element	Typical Range (% by weight)
Carbon (C)	≤ 0.07
Silicon (Si)	0.4 – 1.0
Manganese (Mn)	≤ 1.5
Chromium (Cr)	18.0 – 20.0
Nickel (Ni)	9.0 – 11.0
Molybdenum (Mo)	2.0 – 3.0
Phosphorus (P)	≤ 0.035
Sulfur (S)	≤ 0.03

1.4408 stainless steel Mechanical Properties (As Cast, Heat Treated)

Property	Value
Tensile Strength	440 – 690 MPa
Yield Strength (Rp0.2)	≥ 220 MPa
Elongation (A5)	≥ 20%
Hardness (HBW)	≤ 230
Impact Toughness	> 60 J (at room temperature)
Density	~7.9 g/cm³

Is 1.4408 the same as 316L?
Yes, EN 1.4408 is a cast stainless steel that is the equivalent of the American casting grade CF8M, and is considered the cast version of SS316. While both share a similar chemical composition, their designations reflect their use: 1.4408 (or CF8M) is for cast products, whereas SS316 (or AISI 316) is for wrought products like plates, sheets, and bars.

Is 1.4408 the same as CF8M?
Both ACI-ASTM CF8M steel and EN 1.4408 stainless steel are iron alloys. They have a very high 99% of their average alloy composition in common. There are 32 material properties with values for both materials.

1.4408 stainless steel applications

1.4408 (EN GX5CrNiMo19-11-2) stainless steel is a cast austenitic steel with excellent corrosion resistance, particularly in chloride-containing, acidic, and high-humidity environments. This makes it suitable for components in the marine, chemical, food, and pharmaceutical industries. Common applications include valves, pipes, heat exchangers, pumps, chemical reactors, parts of industrial machinery, and equipment for processing paper, textiles, and inks.

1.4408, also known as CF8M in casting, is widely used in casting components such as valve bodies, pump casings, flanges, and fittings.
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