Stainless Steel Grade 314 SS Sheets & Plates

Stainless Steel Grade 314 SS Sheets & Plates - Image 2

Stainless Steel Grade 314 SS Sheets & Plates

Chromium 23-26%,

nickel 19-22%,

silicon 1.5-3%,

manganese ≤ 2%,

carbon ≤ 0.25%.

JBL Company: Compared to ordinary stainless steel, the increased silicon content in 314 makes it more suitable for continuous exposure to environments above 800℃.

Product Description

Common thicknesses for Stainless Steel Grade 314 SS Sheets & Plates range from 0.5 mm to 50 mm; key selection criteria include:

This kind of stainless steel sheet has a wide range of specifications:

Rolled hard material: thickness ranging from 0.03mm to 3mm, width ranging from 2mm to 1520mm;
Strip material: thickness ranging from 0.03mm to 3mm, width ranging from 2mm to 1520mm;
Thin sheet material: thickness ranging from 0.09mm to 0.31mm.

Note that the material exhibits a pronounced tendency toward work hardening during cold processing.

SUS314 Stainless Steel: The Secret Weapon for High-Temperature Resistance

Chromium (23–26%)

The key element that forms a dense oxide film, imparting basic corrosion resistance.

Nickel (19–22%)

Stabilizes the austenitic structure and enhances ductility at high temperatures.

Silicon (1.5–3%)

A key differentiator; enhances oxidation resistance by promoting the formation of a surface silicon dioxide layer.

Carbon (≤0.25%)

Strict control is required regarding carbide formation with chromium to avoid intergranular corrosion.

Analysis of Element Synergistic Effects

（C）：0.25%；
（Mn）：2.00%；
（P）：0.045%；
（S）：0.030%；
（Si）：1.50%–3.00%；
（Cr）：23.00%–26.00%；
（Ni）：19.00%–22.00%。

The interaction of various elements determines the unique properties of 314 stainless steel:

1. The chromium-nickel ratio is controlled at approximately 1.2:1, maintaining structural stability while preventing the precipitation of the σ phase.

2. Silicon preferentially oxidizes at high temperatures to form a SiO₂ glass layer, which is more resistant to peeling than pure chromium oxide.

3. Manganese (≤2%) is present as a deoxidizer, simultaneously improving hot working properties.

314 stainless steel – Typical high-temperature application scenarios