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ČSN · Czechia · 3 grades

# 15 XXX NN

The designation 15 XXX NN is carried by 3 different grades. Compare them on the elements that actually differ, then open the one your print means.

- *Matching grades* **3**
- [*Category* **Quenched and tempered steels · 133 grades**](/categories/quenched-and-tempered-steels "Category: Quenched and tempered steels · 133 grades")
- [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades")

[Search](/search "Steel grade search")[Inquiry](/inquiry "Inquiry")

## Which of the 3 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.

| Grade | Material no. | Category | Designations | C% | Mo% | Si% | P% | S% | Cr% |
|---|---|---|---|---|---|---|---|---|---|
| [50CrMo4](/materials/din-en/50crmo4 "50CrMo4") | [1.7228](/materials/material-no/1.7228 "1.7228") 1.7 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 29 | 0,46-0,54 | 0,15-0,30 | ≤0,40 | 0,035 | 0,035 | 0,90-1,20 |
| [16CrMoV4](/materials/din-en/16crmov4 "16CrMoV4") | [1.7728](/materials/material-no/1.7728 "1.7728") 1.7 | [Others](/categories/others "Others") | 4 | 0,13-0,20 | 0,20-0,30 | 0,15-0,35 | 0,015 | 0,013 | 0,90-1,20 |
| [21CrVMoW12](/materials/din-en/21crvmow12 "21CrVMoW12") | [1.8212](/materials/material-no/1.8212 "1.8212") 1.8 | [Others](/categories/others "Others") | 2 | 0,18-0,25 | 0,35-0,45 | 0,15-0,35 | 0,035 | 0,035 | 2,70-3,00 |

## 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.

[Search](/search "Steel grade search")[Inquiry](/inquiry "Inquiry")