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![Higher strength steels](/images/uploads/059cabe0-01fd-4f35-86d8-8806e154fa8a/higher-strength-steels-category-heavy-plate-edge-1920x1080.jpg)

Category · 20 grades

# Higher strength steels

Higher strength steels are structural materials designed to carry greater loads than conventional structural steels while retaining useful ductility. They are used for load-bearing structures and components where higher strength can support efficient material use and durable fabricated designs.

| Grade | Material no. | C | Al | Si | P | S | Ti |
|---|---|---|---|---|---|---|---|
| [H 220 BD](/materials/din-en/h-220-bd "H 220 BD") | [1.0353](/materials/material-no/1.0353 "1.0353") | — | — | — | — | — | — |
| [H 180 BD](/materials/din-en/h-180-bd "H 180 BD") | [1.0354](/materials/material-no/1.0354 "1.0354") | — | — | — | — | — | — |
| [H300BD](/materials/din-en/h300bd "H300BD") | [1.0445](/materials/material-no/1.0445 "1.0445") | — | — | — | — | — | — |
| [HX 160 YD](/materials/din-en/hx-160-yd "HX 160 YD") | [1.0910](/materials/material-no/1.0910 "1.0910") | ≤0,01 | ≤0,10 | ≤0,15 | 0,06 | 0,025 | ≤0,12 |
| [H 180 BD](/materials/din-en/h-180-bd "H 180 BD") | [1.0914](/materials/material-no/1.0914 "1.0914") | ≤0,10 | ≤0,1 | ≤0,50 | 0,06 | 0,025 | ≤0,12 |
| [H 220 BD](/materials/din-en/h-220-bd "H 220 BD") | [1.0919](/materials/material-no/1.0919 "1.0919") | ≤0,10 | ≤0,1 | ≤0,50 | 0,08 | 0,025 | ≤0,12 |
| [H 180 YD](/materials/din-en/h-180-yd "H 180 YD") | [1.0921](/materials/material-no/1.0921 "1.0921") | ≤0,01 | ≤0,1 | ≤0,20 | 0,06 | 0,025 | ≤0,12 |
| [H 220 YD](/materials/din-en/h-220-yd "H 220 YD") | [1.0923](/materials/material-no/1.0923 "1.0923") | ≤0,01 | ≤0,1 | ≤0,20 | 0,08 | 0,025 | ≤0,12 |
| [H 260 BD](/materials/din-en/h260bd "H 260 BD") | [1.0924](/materials/material-no/1.0924 "1.0924") | ≤0,10 | ≤0,1 | ≤0,50 | 0,1 | 0,025 | ≤0,12 |
| [H 260YD](/materials/din-en/h-260yd "H 260YD") | [1.0926](/materials/material-no/1.0926 "1.0926") | ≤0,01 | ≤0,1 | ≤0,25 | 0,1 | 0,025 | ≤0,12 |
| [HX 300 YD](/materials/din-en/hx-300-yd "HX 300 YD") | [1.0927](/materials/material-no/1.0927 "1.0927") | ≤0,015 | ≤0,1 | ≤0,30 | 0,1 | 0,025 | ≤0,12 |
| [HX260LAD](/materials/din-en/hx260lad "HX260LAD") | [1.0929](/materials/material-no/1.0929 "1.0929") | ≤0,11 | ≥0,015 | ≤0,50 | 0,03 | 0,025 | ≤0,12 |
| [HX300BD](/materials/din-en/hx300bd "HX300BD") | [1.0930](/materials/material-no/1.0930 "1.0930") | ≤0,11 | ≤0,01 | ≤0,50 | 0,12 | 0,025 | ≤0,12 |
| [HX300LAD](/materials/din-en/hx300lad "HX300LAD") | [1.0932](/materials/material-no/1.0932 "1.0932") | ≤0,11 | ≤0,01 | ≤0,50 | 0,03 | 0,025 | ≤0,15 |
| [HX340LAD](/materials/din-en/hx340lad "HX340LAD") | [1.0933](/materials/material-no/1.0933 "1.0933") | ≤0,11 | ≥0,015 | ≤0,50 | 0,03 | 0,025 | ≤0,15 |
| [HX380LAD](/materials/din-en/hx380lad "HX380LAD") | [1.0934](/materials/material-no/1.0934 "1.0934") | ≤0,11 | ≥0,015 | ≤0,50 | 0,03 | 0,025 | ≤0,15 |
| [HX420LAD](/materials/din-en/hx420lad "HX420LAD") | [1.0935](/materials/material-no/1.0935 "1.0935") | ≤0,11 | ≥0,015 | ≤0,50 | 0,03 | 0,025 | ≤0,15 |
| [HX340BD](/materials/din-en/hx340bd "HX340BD") | [1.0945](/materials/material-no/1.0945 "1.0945") | ≤0,11 | ≤0,1 | ≤0,50 | 0,12 | 0,025 | ≤0,12 |
| [HX460LAD](/materials/din-en/hx460lad "HX460LAD") | [1.0990](/materials/material-no/1.0990 "1.0990") | ≤0,15 | ≥0,015 | ≤0,50 | 0,03 | 0,025 | ≤0,15 |
| [HX500LAD](/materials/din-en/hx500lad "HX500LAD") | [1.0991](/materials/material-no/1.0991 "1.0991") | ≤0,15 | ≥0,015 | ≤0,50 | 0,03 | 0,025 | ≤0,15 |

## Standards covering this category

 13

- [**DIN / EN***20 grades*](/materials/din-en "DIN / EN — 20 grades in this category")
- [**UNS***1 grade*](/materials/uns "UNS — 1 grade in this category")
- [**AISI / SAE***1 grade*](/materials/aisi-sae "AISI / SAE — 1 grade in this category")
- [**BS***1 grade*](/materials/bs "BS — 1 grade in this category")
- [**AFNOR***1 grade*](/materials/afnor "AFNOR — 1 grade in this category")
- [**ISO***1 grade*](/materials/iso "ISO — 1 grade in this category")
- [**JIS***1 grade*](/materials/jis "JIS — 1 grade in this category")
- [**GOST***1 grade*](/materials/gost "GOST — 1 grade in this category")
- [**UNI***1 grade*](/materials/uni "UNI — 1 grade in this category")
- [**ČSN***1 grade*](/materials/csn "ČSN — 1 grade in this category")
- [**PN***1 grade*](/materials/pn "PN — 1 grade in this category")
- [**STAS***1 grade*](/materials/stas "STAS — 1 grade in this category")
- [**BDS***1 grade*](/materials/bds "BDS — 1 grade in this category")

## Property ranges

 13

| Property | Unit | Min | Max | Grades |
|---|---|---|---|---|
| Rm | N/mm² | 450 | 490 | 1 |
| Re | N/mm² | 260 | 325 | 1 |
| A5 | % | 21 | 28 | 1 |
| Z | % | 57 | 65 | 1 |
| KCU | kJ/m² | 590 | 1200 | 1 |
| rho | g/cm³ | 7.85 | 7.85 | 20 |
| E | GPa | 162 | 181 | 1 |
| alpha | 10^-6/K | 13 | 16.2 | 1 |
| cp | J/(kg·K) | 470 | 470 | 1 |
| Ac1 | °C | 736 | 736 | 1 |
| Ac3 | °C | 920 | 920 | 1 |
| Ar3 | °C | 791 | 791 | 1 |
| Ar1 | °C | 641 | 641 | 1 |

Derived from 20 grades in this category with a recorded value.

## Composition range

 8

| Property | Unit | Min | Max | Grades |
|---|---|---|---|---|
| C | % | 0.01 | 0.15 | 17 |
| Al | % | 0.01 | 0.1 | 17 |
| Si | % | 0.15 | 0.5 | 17 |
| P | % | 0.03 | 0.12 | 17 |
| S | % | 0.025 | 0.025 | 17 |
| Ti | % | 0.12 | 0.15 | 17 |
| Mn | % | 0.6 | 1.7 | 17 |
| Nb | % | 0.09 | 0.09 | 17 |

Derived from 17 grades in this category with a recorded value.

## Related guides

 1

- [**High-Strength Low-Alloy Steels: Grades, Microalloying, Processing, and Properties**](/wiki/steel-families/high-strength-low-alloy-steels "High-Strength Low-Alloy Steels: Grades, Microalloying, Processing, and Properties")