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title: "St 45.8 — 3 equivalent grades, compared"
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DIN / EN · Europe · 3 grades

# St 45.8

The designation St 45.8 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* **Unalloyed structural steels · 452 grades**](/categories/unalloyed-structural-steels "Category: Unalloyed structural steels · 452 grades")
- [*Category* **Quenched and tempered steels · 133 grades**](/categories/quenched-and-tempered-steels "Category: Quenched and tempered steels · 133 grades")
- [*Category* **Heat-resistant structural steels · 62 grades**](/categories/heat-resistant-structural-steels "Category: Heat-resistant structural steels · 62 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 | Si% | S% | Mn% | C% | P% |
|---|---|---|---|---|---|---|---|---|
| [K02707](/materials/uns/k02707 "K02707") | [1.0405](/materials/material-no/1.0405 "1.0405") 1.0 | [Unalloyed structural steels](/categories/unalloyed-structural-steels "Unalloyed structural steels") | 13 | 0,10-0,35 | 0,04 | 0,40-1,20 | ≤0,21 | 0,04 |
| [G10200](/materials/uns/g10200 "G10200") | [1.0408](/materials/material-no/1.0408 "1.0408") 1.0 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 10 | ≤0,35 | 0,025 | 0,40-1,10 | ≤0,21 | 0,025 |
| [K01701](/materials/uns/k01701 "K01701") | [1.0425](/materials/material-no/1.0425 "1.0425") 1.0 | [Heat-resistant structural steels](/categories/heat-resistant-structural-steels "Heat-resistant structural steels") | 79 | ≤0,40 | 0,01 | 0,80-1,40 | ≤0,20 | 0,025 |

## 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")