Material Grades Reference — SS 316, 304, Duplex & More

Detailed reference pages for stainless steel, duplex, carbon steel, and alloy steel grades covering chemistry limits, mechanical properties, and typical applications.

Stainless Steel

SS 304 vs SS 316: Differences, Uses & When to Choose

Side-by-side comparison of SS 304 vs SS 316 stainless steel — composition, corrosion resistance, cos…

6 min read

SS 304 (1.4301): Chemical Composition & Properties

Authoritative SS 304 chemical composition limits, mechanical properties, and standards coverage (AST…

5 min read

SS 304L (1.4307): Composition & Properties

SS 304L chemical composition limits, mechanical properties, and weldability guide. Covers ASTM A240 …

5 min read

SS 316 vs 316L: Key Differences Explained

Detailed comparison of SS 316 vs 316L stainless steel — carbon content, sensitization risk, weldabil…

6 min read

SS 316 (1.4401): Chemical Composition & Properties

Complete SS 316 chemical composition table, mechanical properties, and standards coverage (ASTM A240…

5 min read

SS 316L (1.4404): Composition, Properties & Uses

Full SS 316L chemical composition table, mechanical properties, and weldability guidance. Covers AST…

6 min read

SS 321 (1.4541): Titanium-Stabilized Stainless Steel

SS 321 chemical composition, mechanical properties, and high-temperature service guidance. Covers AS…

5 min read

Duplex & Super Duplex

Duplex 2205 (1.4462): Properties & Composition

Complete Duplex 2205 chemical composition, mechanical properties, PREN, and standards coverage. Refe…

5 min read

Super Duplex 2507 (1.4410): Composition & Uses

Full Super Duplex 2507 chemical composition, mechanical properties, PREN, and applications. Covers A…

6 min read

Carbon Steel

Carbon Steel Grades: A36, S275 & Common Specs

Chemical composition and mechanical properties of common carbon steel grades including ASTM A36, EN …

6 min read

Alloy Steel

Alloy Steel Grades: 4130, 4140 & Key Properties

Chemical composition and mechanical properties of alloy steel grades 4130 and 4140 (chromoly). Cover…

6 min read

Tools & Comparisons

Stainless Steel & Alloy Grades Reference | TestCert

Complete reference for stainless steel and alloy grades — chemical composition, mechanical propertie…

6 min read

How to Validate Chemistry Against Grade Specifications

Step-by-step guide to validating chemical composition on Mill Test Certificates against grade specif…

8 min read