---
title: "High-speed steels — 59 grades with composition"
description: "High-speed steels are alloyed tool steels designed to retain hardness and cutting ability when tools heat up during high-speed machining. Their hot…"
canonical: https://steelequivalents.com/categories/high-speed-steels
language: en
robots: index, follow
og_type: website
type: category-detail
language_alternates:
  en: https://steelequivalents.com/categories/high-speed-steels.md
  cs: https://steelequivalents.com/cs/kategorie/rychlořezné-oceli.md
  de: https://steelequivalents.com/de/kategorien/schnellarbeitsstähle.md
  es: https://steelequivalents.com/es/categorías/aceros-rápidos.md
  fr: https://steelequivalents.com/fr/catégories/aciers-rapides.md
  hu: https://steelequivalents.com/hu/kategóriák/gyorsacélok.md
  it: https://steelequivalents.com/it/categorie/acciai-rapidi.md
  nl: https://steelequivalents.com/nl/categorieën/sneldraaistalen.md
  pl: https://steelequivalents.com/pl/kategorie/stale-szybkotnące.md
  pt: https://steelequivalents.com/pt/categorias/aços-rápidos.md
  ru: https://steelequivalents.com/ru/категории/быстрорежущие-стали.md
  tr: https://steelequivalents.com/tr/kategoriler/yüksek-hız-çelikleri.md
  zh: https://steelequivalents.com/zh/类别/高速钢.md
  ja: https://steelequivalents.com/ja/カテゴリー/高速度工具鋼.md
  ar: https://steelequivalents.com/ar/الفئات/فولاذ-عالي-السرعة.md
  ko: https://steelequivalents.com/ko/분류/고속도강.md
  pt-br: https://steelequivalents.com/pt-br/categorias/aços-rápidos.md
  hi: https://steelequivalents.com/hi/श्रेणियाँ/हाई-स्पीड-इस्पात.md
content_hash: sha256:0687fc19d994fc419c1657906c4755e4fc388fa42c155a301c967c620268bd75
generated: 2026-09-24
---

> **Machine-readable Markdown rendering.** This is a Markdown representation of a web page,
> served for AI agents and crawlers as a token-efficient alternative to the full HTML.
> Full interactive HTML version: https://steelequivalents.com/categories/high-speed-steels
> Canonical URL: https://steelequivalents.com/categories/high-speed-steels
> Available languages: en, cs, de, es, fr, hu, it, nl, pl, pt, ru, tr, zh, ja, ar, ko, pt-br, hi
> Change detection: `content_hash` is the SHA-256 of this document's Markdown body — everything
> below this block, whitespace-trimmed, excluding the front-matter. Compare it to detect a real
> content change; `generated` moves on every render and is not a change signal.

![High-speed steels](/images/uploads/4ceb6e1d-6d86-48ce-90a3-3977f6291ec1/high-speed-steels-category-hss-drill-flutes-1920x1080.jpg)

Category · 59 grades

# High-speed steels

High-speed steels are alloyed tool steels designed to retain hardness and cutting ability when tools heat up during high-speed machining. Their hot hardness and wear resistance make them suitable for cutting tools such as drills, milling cutters, taps and broaches.

| Grade | Material no. | C | V | Cr | Si | P | S |
|---|---|---|---|---|---|---|---|
| [SKH53](/materials/jis/skh53 "SKH53") | — | 1.15 - 1.25 | 2.7 - 3.2 | 3.8 - 4.5 | max 0.45 | max 0.03 | max 0.03 |
| [SKH50](/materials/jis/skh50 "SKH50") | — | 0.77 - 0.87 | 1 - 1.4 | 3.5 - 4.5 | max 0.7 | max 0.03 | max 0.03 |
| [SKH40](/materials/jis/skh40 "SKH40") | — | 1.23 - 1.33 | 2.7 - 3.2 | 3.8 - 4.5 | max 0.45 | max 0.03 | max 0.03 |
| [SKH57](/materials/jis/skh57 "SKH57") | — | 1.2 - 1.35 | 3 - 3.5 | 3.8 - 4.5 | max 0.45 | max 0.03 | max 0.03 |
| [SKH56](/materials/jis/skh56 "SKH56") | — | 0.85 - 0.95 | 1.7 - 2.1 | 3.8 - 4.5 | max 0.45 | max 0.03 | max 0.03 |
| [HS12-1-4-5](/materials/din-en/hs12-1-4-5 "HS12-1-4-5") | [1.3202](/materials/material-no/1.3202 "1.3202") | 1,30-1,45 | 3,50-4,00 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [HS10-4-3-10](/materials/din-en/hs10-4-3-10 "HS10-4-3-10") | [1.3207](/materials/material-no/1.3207 "1.3207") | 1,20-1,35 | 3,00-3,50 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [HS9-4-3-11](/materials/din-en/hs9-4-3-11 "HS9-4-3-11") | [1.3208](/materials/material-no/1.3208 "1.3208") | 1,35-1,45 | 3,20-3,60 | 3,70-4,40 | ≤0,50 | 0,03 | 0,03 |
| [HS5-6-2-8](/materials/din-en/hs5-6-2-8 "HS5-6-2-8") | [1.3209](/materials/material-no/1.3209 "1.3209") | 1,00-1,10 | 1,40-1,70 | 3,80-4,20 | ≤0,45 | 0,03 | 0,03 |
| [S12-1-2-3](/materials/din-en/s12-1-2-3 "S12-1-2-3") | [1.3211](/materials/material-no/1.3211 "1.3211") | 0,77-0,85 | 1,70-2,00 | 3,80-4,50 | ≤045 | 0,03 | 0,03 |
| [S 6-5-2-8](/materials/din-en/s-6-5-2-8 "S 6-5-2-8") | [1.3222](/materials/material-no/1.3222 "1.3222") | 1,40-1,50 | 2,20-2,60 | 4,00-4,50 | 0,20-0,40 | 0,03 | 0,03 |
| [HS2-5-1-3](/materials/din-en/hs2-5-1-3 "HS2-5-1-3") | [1.3241](/materials/material-no/1.3241 "1.3241") | 0,87-0,95 | 1,10-1,50 | 3,50-4,50 | 0,30-0,60 | 0,03 | 0,03 |
| [HS7-7-7-11](/materials/din-en/hs7-7-7-11 "HS7-7-7-11") | [1.3242](/materials/material-no/1.3242 "1.3242") | 2,20-2,40 | 6,30-6,70 | 3,50-4,50 | ≤0,70 | 0,05 | 0,03 |
| [1.3243](/materials/material-no/1.3243 "1.3243") | [1.3243](/materials/material-no/1.3243 "1.3243") | 0,87-0,95 | 1,70-2,10 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [HS6-5-3-8](/materials/din-en/hs6-5-3-8 "HS6-5-3-8") | [1.3244](/materials/material-no/1.3244 "1.3244") | 1,23-1,33 | 2,70-3,20 | 3,80-4,50 | ≤0,70 | 0,03 | 0,03 |
| [HS6-5-2-5S](/materials/din-en/hs6-5-2-5s "HS6-5-2-5S") | [1.3245](/materials/material-no/1.3245 "1.3245") | 0,88-0,96 | 1,70-2,00 | 3,80-4,50 | ≤0,45 | 0,03 | 0,06-0,15 |
| [HS7-4-2-5](/materials/din-en/hs7-4-2-5 "HS7-4-2-5") | [1.3246](/materials/material-no/1.3246 "1.3246") | 1,05-1,15 | 1,70-1,90 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [HS2-9-1-8](/materials/din-en/hs2-9-1-8 "HS2-9-1-8") | [1.3247](/materials/material-no/1.3247 "1.3247") | 1,05-1,15 | 0,90-1,30 | 3,50-4,50 | ≤0,70 | 0,03 | 0,03 |
| [HS2-9-2-8](/materials/din-en/hs2-9-2-8 "HS2-9-2-8") | [1.3249](/materials/material-no/1.3249 "1.3249") | 0,85-0,92 | 1,80-2,20 | 3,50-4,20 | ≤0,45 | 0,03 | 0,03 |
| [PMHS12-0-5-5](/materials/din-en/pmhs12-0-5-5 "PMHS12-0-5-5") | [1.3251](/materials/material-no/1.3251 "1.3251") | 1,50-1,60 | 4,50-5,30 | 3,70-4,50 | 0,10-0,60 | 0,03 | 0,07 |
| [PMHS11-2-5-8](/materials/din-en/pmhs11-2-5-8 "PMHS11-2-5-8") | [1.3253](/materials/material-no/1.3253 "1.3253") | 1,55-1,65 | 4,80-5,20 | 4,50-5,50 | 0,10-0,40 | 0,03 | 0,03 |
| [1.3255](/materials/material-no/1.3255 "1.3255") | [1.3255](/materials/material-no/1.3255 "1.3255") | 0,75-0,83 | 1,40-1,70 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [HS18-1-2-15](/materials/din-en/hs18-1-2-15 "HS18-1-2-15") | [1.3257](/materials/material-no/1.3257 "1.3257") | 0,60-0,70 | 1,40-1,70 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [HS18-1-2-10](/materials/din-en/hs18-1-2-10 "HS18-1-2-10") | [1.3265](/materials/material-no/1.3265 "1.3265") | 0,72-0,80 | 1,40-1,70 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [HS1-5-1-8](/materials/din-en/hs1-5-1-8 "HS1-5-1-8") | [1.3270](/materials/material-no/1.3270 "1.3270") | 0,70-0,75 | 0,80-1,10 | 3,80-4,50 | 0,20-0,40 | 0,03 | 0,03 |
| [PMHS3-3-1-8](/materials/din-en/pmhs3-3-1-8 "PMHS3-3-1-8") | [1.3288](/materials/material-no/1.3288 "1.3288") | 0,75-0,85 | 0,90-1,20 | 3,80-4,50 | 0,40-0,60 | 0,05 | 0,03 |
| [PMHS7-7-7-11](/materials/din-en/pmhs7-7-7-11 "PMHS7-7-7-11") | [1.3292](/materials/material-no/1.3292 "1.3292") | 2,20-2,40 | 6,30-6,70 | 3,50-4,50 | ≤0,70 | 0,05 | 0,03 |
| [PMHS6-5-3-8](/materials/din-en/pmhs6-5-3-8 "PMHS6-5-3-8") | [1.3294](/materials/material-no/1.3294 "1.3294") | 1,23-1,33 | 2,70-3,20 | 3,80-4,50 | ≤0,70 | 0,03 | 0,03 |
| [HS12-1-4](/materials/din-en/hs12-1-4 "HS12-1-4") | [1.3302](/materials/material-no/1.3302 "1.3302") | 1,20-1,35 | 3,50-4,00 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [S 9-1-2](/materials/din-en/s-9-1-2 "S 9-1-2") | [1.3316](/materials/material-no/1.3316 "1.3316") | 0,78-0,86 | 1,40-1,70 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [HS12-1-2](/materials/din-en/hs12-1-2 "HS12-1-2") | [1.3318](/materials/material-no/1.3318 "1.3318") | 0,90-1,00 | 2,30-2,60 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [HS0-4-1](/materials/din-en/hs0-4-1 "HS0-4-1") | [1.3325](/materials/material-no/1.3325 "1.3325") | 0,77-0,85 | 0,90-1,10 | 3,90-4,40 | ≤0,65 | 0,03 | 0,03 |
| [HS1-4-2](/materials/din-en/hs1-4-2 "HS1-4-2") | [1.3326](/materials/material-no/1.3326 "1.3326") | 0,85-0,95 | 1,70-2,20 | 3,60-4,30 | ≤0,65 | 0,03 | 0,03 |
| [HS1-8-1](/materials/din-en/hs1-8-1 "HS1-8-1") | [1.3327](/materials/material-no/1.3327 "1.3327") | 0,77-0,87 | 1,00-1,40 | 3,50-4,50 | ≤0,70 | 0,03 | 0,03 |
| [HS3-3-2](/materials/din-en/hs3-3-2 "HS3-3-2") | [1.3333](/materials/material-no/1.3333 "1.3333") | 0,95-1,03 | 2,20-2,50 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [S 3-3-2 Si](/materials/din-en/s-3-3-2-si "S 3-3-2 Si") | [1.3335](/materials/material-no/1.3335 "1.3335") | 0,95-1,05 | 2,20-2,50 | 4,80-5,50 | 0,70-1,00 | 0,03 | 0,03 |
| [HS4-8-3](/materials/din-en/hs4-8-3 "HS4-8-3") | [1.3336](/materials/material-no/1.3336 "1.3336") | 1,18-1,23 | 2,60-2,80 | 3,80-4,50 | 0,20-0,50 | 0,03 | 0,03 |
| [HS 6-5-2](/materials/din-en/hs6-5-2 "HS 6-5-2") | [1.3339](/materials/material-no/1.3339 "1.3339") | 0,80-0,88 | 1,70-2,10 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [HS6-5-2CS](/materials/din-en/hs6-5-2cs "HS6-5-2CS") | [1.3340](/materials/material-no/1.3340 "1.3340") | 0,95-1,05 | 1,70-2,00 | 3,80-4,50 | ≤0,45 | 0,03 | 0,06-0,15 |
| [HS6-5-2S](/materials/din-en/hs6-5-2s "HS6-5-2S") | [1.3341](/materials/material-no/1.3341 "1.3341") | 0,86-0,94 | 1,70-2,00 | 3,80-4,50 | ≤0,45 | 0,03 | 0,06-0,15 |
| [HS6-5-2C](/materials/din-en/hs6-5-2c "HS6-5-2C") | [1.3342](/materials/material-no/1.3342 "1.3342") | 0,95-1,05 | 1,70-2,00 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [1.3343](/materials/material-no/1.3343 "1.3343") | [1.3343](/materials/material-no/1.3343 "1.3343") | 0,86-0,94 | 1,70-2,10 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [HS6-5-3](/materials/din-en/hs6-5-3 "HS6-5-3") | [1.3344](/materials/material-no/1.3344 "1.3344") | 1,15-1,25 | 2,70-3,20 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [HS6-5-3C](/materials/din-en/hs6-5-3c "HS6-5-3C") | [1.3345](/materials/material-no/1.3345 "1.3345") | 1,25-0,32 | 2,70-3,20 | 3,80-4,50 | ≤0,70 | 0,03 | 0,03 |
| [HS2-9-1](/materials/din-en/hs2-9-1 "HS2-9-1") | [1.3346](/materials/material-no/1.3346 "1.3346") | 0,78-0,86 | 1,00-1,30 | 3,50-4,20 | ≤0,45 | 0,03 | 0,03 |
| [HS7-5-3](/materials/din-en/hs7-5-3 "HS7-5-3") | [1.3347](/materials/material-no/1.3347 "1.3347") | 1,16-1,20 | 2,60-2,80 | 3,80-4,20 | 0,20-0,55 | 0,03 | 0,03 |
| [1.3348](/materials/material-no/1.3348 "1.3348") | [1.3348](/materials/material-no/1.3348 "1.3348") | 0,95-1,05 | 1,70-2,20 | 3,50-4,50 | ≤0,70 | 0,03 | 0,03 |
| [HS6-6-2](/materials/din-en/hs6-6-2 "HS6-6-2") | [1.3350](/materials/material-no/1.3350 "1.3350") | 1,00-1,10 | 2,30-2,60 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [HS6-5-4](/materials/din-en/hs6-5-4 "HS6-5-4") | [1.3351](/materials/material-no/1.3351 "1.3351") | 1,25-1,40 | 3,70-4,20 | 3,80-4,50 | ≤0,45 | 0,03 | 0,03 |
| [PMHS4-3-8](/materials/din-en/pmhs4-3-8 "PMHS4-3-8") | [1.3352](/materials/material-no/1.3352 "1.3352") | 2,42-2,48 | 7,60-8,20 | 3,70-4,50 | — | — | — |

 Page 1 of 2[Next](/categories/high-speed-steels/page/2 "Next")

## Standards covering this category

 23

- [**DIN / EN***53 grades*](/materials/din-en "DIN / EN — 53 grades in this category")
- [**JIS***18 grades*](/materials/jis "JIS — 18 grades in this category")
- [**AISI / SAE***16 grades*](/materials/aisi-sae "AISI / SAE — 16 grades in this category")
- [**KS***16 grades*](/materials/ks "KS — 16 grades in this category")
- [**UNS***14 grades*](/materials/uns "UNS — 14 grades in this category")
- [**AFNOR***13 grades*](/materials/afnor "AFNOR — 13 grades in this category")
- [**ČSN***13 grades*](/materials/csn "ČSN — 13 grades in this category")
- [**BS***11 grades*](/materials/bs "BS — 11 grades in this category")
- [**UNE***11 grades*](/materials/une "UNE — 11 grades in this category")
- [**GOST***10 grades*](/materials/gost "GOST — 10 grades in this category")
- [**SRPS***9 grades*](/materials/srps "SRPS — 9 grades in this category")
- [**UNI***8 grades*](/materials/uni "UNI — 8 grades in this category")
- [**PN***8 grades*](/materials/pn "PN — 8 grades in this category")
- [**GB***7 grades*](/materials/gb "GB — 7 grades in this category")
- [**SS***6 grades*](/materials/ss "SS — 6 grades in this category")
- [**STN***6 grades*](/materials/stn "STN — 6 grades in this category")
- [**BDS***6 grades*](/materials/bds "BDS — 6 grades in this category")
- [**ÖNORM***6 grades*](/materials/onorm "ÖNORM — 6 grades in this category")
- [**ISO***5 grades*](/materials/iso "ISO — 5 grades in this category")
- [**MSZ***5 grades*](/materials/msz "MSZ — 5 grades in this category")
- [**ASTM***2 grades*](/materials/astm "ASTM — 2 grades in this category")
- [**STAS***2 grades*](/materials/stas "STAS — 2 grades in this category")
- [**SAE AMS***1 grade*](/materials/ams "SAE AMS — 1 grade in this category")

## Property ranges

 14

| Property | Unit | Min | Max | Grades |
|---|---|---|---|---|
| Rm | N/mm² | 840 | 960 | 3 |
| Re | N/mm² | 510 | 540 | 3 |
| A5 | % | 7 | 12 | 3 |
| Z | % | 10 | 14 | 3 |
| KCU | kJ/m² | 80 | 190 | 3 |
| HB | — | 255 | 302 | 25 |
| rho | g/cm³ | 7.8 | 8.8 | 54 |
| E | GPa | 181 | 229 | 3 |
| lambda | W/(m·K) | 25 | 36 | 3 |
| rho\_el | nΩ·m | 419 | 1173 | 2 |
| Ac1 | °C | 800 | 840 | 6 |
| Ac3 | °C | 840 | 875 | 3 |
| Ar3 | °C | 770 | 805 | 3 |
| Ar1 | °C | 725 | 765 | 4 |

Derived from 54 grades in this category with a recorded value.

## Composition range

 12

| Property | Unit | Min | Max | Grades |
|---|---|---|---|---|
| C | % | 0.55 | 2.48 | 58 |
| Si | % | 0.1 | 45 | 57 |
| P | % | 0.03 | 0.05 | 56 |
| S | % | 0.03 | 0.15 | 56 |
| V | % | 0.8 | 8.2 | 59 |
| Cr | % | 3.5 | 5.5 | 59 |
| Mn | % | 0.1 | 0.45 | 56 |
| Co | % | 2.3 | 16 | 26 |
| Cu | % | 0.25 | 0.25 | 5 |
| Nb | % | 0.9 | 1.2 | 1 |
| Mo | % | 0.5 | 10 | 57 |
| W | % | 0.7 | 18.7 | 58 |

Derived from 59 grades in this category with a recorded value.

## Heat treatment

 4

| Operation | Min Temperature (°C) | Max Temperature (°C) | Grades |
|---|---|---|---|
| quenching | 1170 | 1270 | 5 |
| tempering | 550 | 550 | 5 |
| annealing | — | — | 5 |
| preheating | 800 | 900 | 4 |

## Related guides

 2

- [**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")
- [**Steel Creep, Stress Rupture, and Long-Term High-Temperature Performance**](/wiki/reading-a-datasheet/steel-creep-stress-rupture-and-long-term-high-temperature-performance "Steel Creep, Stress Rupture, and Long-Term High-Temperature Performance")