What is 1.4408 material?
EN 1.4408 (GX5CrNiMo19-11-2) is a highly corrosion-resistant cast austenitic stainless steel, widely used for valves, pumps, and pipe fittings in chemical and marine environments. It is considered the casting equivalent of wrought AISI 316L/316, featuring good strength and excellent resistance to chloride-driven pitting due to its molybdenum content.
Is 1.4408 equivalent to SS316?
Yes, EN 1.4408 is considered the European equivalent to American AISI SS316 (specifically, the cast version, CF8M). Both are austenitic stainless steels with similar corrosion resistance, molybdenum content, and mechanical properties. However, 1.4408 is a casting grade, while AISI 316 is often wrought.
| 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.
| 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 |
| 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 |
1.4408 stainless steel applications
Valves and Fittings: Frequently used for ball valves, check valves, gate valves, and flanges, particularly where high pressure and corrosion resistance are required.
Marine & Offshore: Due to its excellent resistance to saltwater, it is used in marine components, ship equipment, and offshore structures.
Chemical Processing: Utilized in chemical reactors, pressure vessels, and piping systems handling corrosive media.
Food & Beverage/Pharmaceutical: Used in processing equipment where hygienic properties and resistance to cleaning agents are essential.
Industrial Pumps: Commonly chosen for pump housings and impellers.
1.4408, also known as CF8M in casting, is widely used in casting components such as valve bodies, pump casings, flanges, and fittings.
At Gnee, we offer high-quality 1.4408 stainless steel castings that are dimensionally precise, corrosion-resistant, and durable. Our products typically include castings, flanges, fittings, and valve assemblies.
With over 18 years of export experience, we offer competitive pricing and timely delivery to meet your industrial needs, ensuring you receive the most reliable and cost-effective solutions.
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