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BS · United Kingdom · 3 grades

# 817M40

The designation 817M40 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")

[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% | P% | Cr% | Ni% | Mo% | Si% |
|---|---|---|---|---|---|---|---|---|---|
| [1.6511](/materials/material-no/1.6511 "1.6511") | [1.6511](/materials/material-no/1.6511 "1.6511") 1.6 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 91 | 0,32-0,40 | 0,035 | 0,90-1,20 | 0,90-1,20 | 0,15-,30 | ≤0,40 |
| [40 NiCrMo 8 4](/materials/din-en/40nicrmo8-4 "40 NiCrMo 8 4") | [1.6562](/materials/material-no/1.6562 "1.6562") 1.6 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 33 | 0,37-0,44 | 0,02 | 0,70-0,95 | 1,65-2,00 | 0,30-0,40 | 0,20-0,35 |
| [1.6582](/materials/material-no/1.6582 "1.6582") | [1.6582](/materials/material-no/1.6582 "1.6582") 1.6 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 84 | 0,30-0,38 | 0,025 | 1,30-1,70 | 1,30-1,70 | 0,15-0,30 | ≤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.

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