SteelEquivalents.com

Explore

MaterialsSteel materials by standardCategoriesSteel material categoriesSearchSteel grade searchCalculatorsSteel calculatorsServicesCutting, machining and finishing to order
Latest news
Knowledge & SafetySteel WikiGrades, standards and metallurgy explained
Help & SupportContactGet in touch with the teamFAQCommon questions answeredSupport Chat pageFAQs, guides & live chat in one place
Settings

Appearance

Accent

Language

Welcome

Sign in to save favorites and manage your account.

AISI / SAE · United States · 6 grades

4340

The designation 4340 is carried by 6 different grades. Compare them on the elements that actually differ, then open the one your print means.

Which of the 6 do you want?

This name is carried by several grades. The elements shown are the ones whose values actually differ across the set — the ones that decide the question. Values are the source text verbatim; an em dash means no value on file for that element on that grade, not zero.

GradeMaterial no.CategoryDesignationsCr%Ni%Mo%C%Mn%Si%
1.65111.65111.6Quenched and tempered steels910,90-1,200,90-1,200,15-,300,32-0,400,50-0,80≤0,40
40 NiCrMo 8 41.65621.6Quenched and tempered steels330,70-0,951,65-2,000,30-0,400,37-0,440,70-0,900,20-0,35
40NiCrMo61.65651.6Quenched and tempered steels560,90-1,401,40-1,700,20-0,300,35-0,450,50-0,700,15-0,35
30CrNiMo81.65801.6Quenched and tempered steels291,80-2,201,80-2,200,30-0,500,26-0,340,30-0,60≤0,40
1.65821.65821.6Quenched and tempered steels841,30-1,701,30-1,700,15-0,300,30-0,380,50-0,80≤0,40
30CrMoV91.77071.7Quenched and tempered steels192,30-2,700,60,15-0,250,26-0,340,40-0,70≤0,40

Not sure which one your print means?

Search the catalogue by designation, material number or composition — every name on this page is itself a way in.