What is the difference between SCS14 and SUS316?
May 21, 2026
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What is SUS316 stainless steel?
SUS316 is a high-quality austenitic stainless steel. The name "SUS" originates from the Japanese Industrial Standard (JIS), while globally it is commonly referred to as AISI 316. It contains 16-18% chromium, 10-14% nickel, and crucially 2-3% molybdenum. It possesses excellent corrosion resistance, strength, and durability, and can be processed into various practical product forms, including plates, coils, pipes, bars, and wires.
What is scs14 material?
SCS14 is a Japanese Industrial Standards (JIS) designation for a cast austenitic stainless steel. It is highly resistant to corrosion, pitting, and chlorides, making it the equivalent to wrought AISI Type 316 / SUS316 stainless steel (or CF8M in the ASTM standard).
SUS316 Stainless Steel vs. SCS14: Key Differences
| Feature | SUS316 | SCS14 |
| Category | Wrought Stainless Steel | Cast Stainless Steel |
| JIS Standard | JIS G4303 (Bars), G4305 (Plates) | JIS G5121 (Castings) |
| Form | Plates, Sheets, Bars, Pipes, Wires | Valves, Pump bodies, Impellers |
| Equivalent Wrought | - | SUS316 |
| ASTM Equivalent | AISI 316 | ASTM A351 CF8M |
SUS316 Stainless Steel vs. SCS14: Chemical Composition Comparison (wt%)
Note: Casting grades (SCS) often have slightly higher Silicon content to improve the fluidity of the molten metal during the pouring process.
| Element | SUS316 (Wrought) | SCS14 (Cast) |
| Carbon (C) |
≤0.08 |
≤ 0.08 |
| Silicon (Si) |
≤1.00 |
≤ 1.50 (Higher for fluidity) |
| Manganese (Mn) |
≤2.00 |
≤ 2.00 |
| Phosphorus (P) |
≤0.045 |
≤ 0.040 |
| Sulfur (S) |
≤0.030 |
≤ 0.040 |
| Nickel (Ni) | 10.00 – 14.00 | 9.00 – 12.00 |
| Chromium (Cr) | 16.00 – 18.00 | 17.00 – 21.00 |
| Molybdenum (Mo) | 2.00 – 3.00 | 2.00 – 3.00 |
SUS316 Stainless Steel vs. SCS14: Mechanical Properties
| Property | SUS316 (Annealed) | SCS14 (Solution Treated) |
| Tensile Strength |
≥ 520 MPa |
≥ 440 MPa |
| Yield Strength (0.2%) |
≥ 205 MPa |
≥ 205 MPa |
| Elongation (%) |
≥ 40 % |
≥30 % |
| Hardness |
≤ 187 HBW |
- |
AISI 316 vs. ASTM A351 CF8M
AISI 316 and ASTM A351 CF8M are functionally equivalent marine-grade austenitic stainless steels, but with a major difference: AISI 316 is a wrought alloy (shaped via rolling, forging, or machining), while CF8M is a cast alloy (poured into molds to make complex shapes like valve bodies or pump casings).
Why is my SCS14 part slightly magnetic, but my SUS316 plate is not?
SUS316 is fully austenitic and typically non-magnetic.
SCS14 usually contains a small amount of Delta Ferrite (typically 5% to 15%) in its microstructure. This ferrite is intentionally designed into the alloy to prevent "hot cracking" during the cooling of the casting and to improve weldability. Because ferrite is magnetic, the casting may show a slight magnetic pull.
SUS316 Stainless Steel vs. SCS14:Applications
SUS316: Used for heat exchangers, pharmaceutical equipment, architectural trim, and marine hardware made from sheet or bar.
SCS14: Used for complex-shaped components that cannot be easily machined from bar stock, such as valve bodies, pump casings, and heavy-duty pipe fittings.
SCS14 and SUS316 stainless steel supplier
In addition to supplying raw materials, Gnee also provides the following processing services for 316 and SCS14:
Surface treatments: 2B, BA, No.4, HL (brushed), 8K mirror finish, and sandblasting.
Cutting services: Laser cutting, waterjet cutting, plasma cutting, and sawing.
CNC machining: Turning, milling, and drilling of forged SUS316 bars and SCS14 billets.
Testing and inspection: PMI (Property Analysis and Inspection), ultrasonic testing, X-ray inspection (for castings), and MTC EN 10204 3.1 testing.
SUS316 stainless steel specifications
| Product Form | Specifications / Size Range |
| Round Bar | Diameter: 2mm – 500mm; Bright or Black surface |
| Hex / Square Bar | S: 5mm – 100mm; Cold drawn or peeled |
| Angle / Flat Bar | Standard L-profiles and rectangular sections |
SCS14 Casting specifications
| Product Form | Manufacturing Process |
| Valve Body / Bonnet | Investment Casting (Silica Sol) or Sand Casting |
| Pump Casing / Impeller | Precision Casting + CNC Machining |
| Threaded Fitting | Cast elbows, tees, and unions (150lb class) |
| Cleats, Hinges, Anchors | Mirror polished precision casting |
| OEM Castings | Produced according to customer drawings |
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