Stainless Steel Alloys & Chemical Compositions
Explore calibrated engineering data for industrial woven wire mesh. Compare ASTM standards, PREN indices, continuous thermal thresholds, and resistance against chloride stress corrosion cracking (SCC).
Category Context: Austenitic Standards
Standard non-magnetic austenitic grades optimized for versatile forming, weaving ductility, and general-purpose filtration in mild-to-moderate chemical environments.
Comparative Engineering Matrix
Values per standard ASTM A580 / DIN EN 10088-3 cold-drawn wire specifications.
| Alloy Grade | Standard UNS / EN | Cr / Ni / Mo (% wt) | PREN Score | Continuous Temp | SCC Threshold | Primary Acid Scope | Details |
|---|---|---|---|---|---|---|---|
AISI 304 | S30400 / 1.4301 | 18.0 – 20.0% Cr · 8.0 – 10.5% Ni | 18.5 | 870°C (1598°F) | Moderate | Organic acids, mild food-grade solutions | |
AISI 304L | S30403 / 1.4306 | 18.0 – 20.0% Cr · 8.0 – 12.0% Ni | 18.5 | 800°C (1472°F) | Moderate | Nitric acid, ambient organic solvents | |
AISI 321 | S32100 / 1.4541 | 17.0 – 19.0% Cr · 9.0 – 12.0% Ni | 19.0 | 900°C (1652°F) | Good | Dilute sulfuric & nitric mixes |
Deep-Dive Metallurgical Profiles
Microstructure properties and weaving considerations for each candidate alloy.
Unsure which stainless alloy fits your process stream?
Our metallurgical team provides positive material identification (PMI) with X-ray fluorescence (XRF) spectroscopy, full EN 10204 3.1 material test certificates (MTC), and acid exposure stress assessments prior to roll weaving.
Surface Finishes, Coatings & Thermal Treatments
Engineered post-weaving treatments calibrated to optimize micron pore roughness (Ra), eliminate residual draw stresses, passivate critical contact points, and prevent adhesive blinding in demanding filtration media.
Standard screening, aggregate grading & primary straining
Process fluid filtration, marine intakes & chemical processing
Sterile API pharmaceutical filtration, WFI systems & sanitary food processing
Aesthetic architectural mesh, precision sieves & cleanroom screens
Pre-Weaving Metallurgical Verification
Every wire coil undergoes strict physical, mechanical, and spectroscopic checks prior to loom setup. We ensure chemical consistency and uniform tensile limits for critical industrial filtration.
Primary Smelter Heat Log & Spectrographic Assay
Ladle chemical analysis, melt source verification, heat batch segregation
| Parameter | Limit | Gate |
|---|---|---|
| Heat Number Link | Single Ingot Batch | Verified |
| Carbon (C) Max | <= 0.030% (316L) | Pass |
| Molybdenum (Mo) | 2.00% – 2.50% | In Range |
ZwickRoell 50 kN Calibrated Tensile Tester
Yield strength Rp0.2, ultimate tensile strength Rm, fracture elongation A100
| Parameter | Limit | Gate |
|---|---|---|
| Tensile Strength | 680 – 820 N/mm² | Conforming |
| Elongation (A100) | >= 35% Uniform | Pass |
| Diameter Variance | +/- 0.002 mm | Within Tol. |
Thermo Scientific Niton XL5+ XRF Analyzer
Positive material identification, Ni/Cr balance, trace element detection
| Parameter | Limit | Gate |
|---|---|---|
| Chromium (Cr) | 16.50% – 18.50% | Locked |
| Nickel (Ni) | 10.00% – 13.00% | Locked |
| Grade Confirmation | AISI 316L / 1.4404 | Certified |