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title: "251A58 — 3 equivalent grades, compared"
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BS · United Kingdom · 3 grades

# 251A58

The designation 251A58 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* **High-strength multi-phase steels · 5 grades**](/categories/high-strength-multi-phase-steels "Category: High-strength multi-phase steels · 5 grades")
- [*Category* **Spring steels · 52 grades**](/categories/spring-steels "Category: Spring steels · 52 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 | Mn% | C% | Si% | P% | S% | Cr% |
|---|---|---|---|---|---|---|---|---|---|
| [1.0961](/materials/material-no/1.0961 "1.0961") | [1.0961](/materials/material-no/1.0961 "1.0961") 1.0 | [High-strength multi-phase steels](/categories/high-strength-multi-phase-steels "High-strength multi-phase steels") | 39 | ≤1,20 | ≤0,18 | ≤0,50 | 0,03 | 0,01 | — |
| [55Si7](/materials/din-en/55si7 "55Si7") | [1.5026](/materials/material-no/1.5026 "1.5026") 1.5 | [Spring steels](/categories/spring-steels "Spring steels") | 43 | 0,60-0,90 | 0,52-0,60 | 1,60-2,00 | 0,025 | 0,025 | ≤0,40 |
| [55SiCr7](/materials/din-en/55sicr7 "55SiCr7") | [1.7106](/materials/material-no/1.7106 "1.7106") 1.7 | [Spring steels](/categories/spring-steels "Spring steels") | 3 | 0,70-1,00 | 0,52-0,60 | 1,60-2,00 | 0,025 | 0,025 | 0,20-0,45 |

## 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")