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Learn the Hastelloy C276 chemical composition, including nickel, chromium, molybdenum, tungsten, iron, carbon, and other elements, plus how each element affects corrosion resistance and weldability.

What is Hastelloy C276? Learn about UNS N10276, its chemical composition, corrosion resistance, mechanical properties, applications, standards, and common product forms.

A practical cross-reference of Inconel 625 equivalents worldwide — UNS N06625, EN/DIN 2.4856 (NiCr22Mo9Nb), JIS NCF 625, AFNOR NC22DNb, GOST ХН65МВБ, BS NA 43, China NS336 and the AMS aerospace specs — plus how to read the table correctly so a substitution never becomes a failure.

This guide covers ten primary ASTM standards that directly specify Inconel 625 products, plus seven supporting testing standards referenced within them. For each, we explain the scope, key requirements, and how to use it in practice.

This guide breaks the selection process into nine sequential steps that take you from service definition to purchase order, ensuring nothing is missed.

Inconel 625 is a nickel-based superalloy with high molybdenum and niobium, while 316L is an iron-based austenitic stainless steel. The most consequential difference is the nickel-to-iron ratio: Inconel 625 has Ni ≥58% vs ~11% in 316L. This is why Inconel 625 is immune to chloride stress corrosion cracking while 316L is vulnerable above 60°C. The second-most consequential difference is molybdenum: 8-10% in Inconel 625 vs 2-3% in 316L-the primary reason Inconel 625 has PREN ≥45 vs PREN 23-26 for 316L.

This article provides a complete comparison of Inconel 625 vs Monel 400, including chemical composition, mechanical properties, corrosion resistance, temperature capability, applications, and material selection guidance.

Inconel 625 vs Hastelloy C276: Full technical comparison of UNS N06625 vs N10276 — corrosion resistance in HCl, seawater & acids, mechanical properties, PREN, CPT, welding, cost & application guide. Updated 2026.