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![Heat-resistant cast steels](/images/uploads/15c66493-abc0-42e8-a531-2ac188ed257b/heat-resistant-cast-steels-category-furnace-grate-1920x1080.jpg)

Category · 82 grades

# Heat-resistant cast steels

Heat-resistant cast steels are cast ferrous alloys formulated for service at elevated temperatures, where resistance to softening and thermal degradation is important. They are used for furnace components, heat-treatment equipment and other high-temperature plant parts that require cast shapes and dependable mechanical performance during heating.

| Grade | Material no. | C | Si | P | S | Cr | Mn |
|---|---|---|---|---|---|---|---|
| [SCH20X](/materials/jis/sch20x "SCH20X") | — | 0.3 - 0.5 | 1 - 2.5 | max 0.04 | max 0.03 | 18 - 21 | max 2 |
| [SCH22X](/materials/jis/sch22x "SCH22X") | — | 0.3 - 0.5 | 1 - 2.5 | max 0.04 | max 0.03 | 24 - 27 | max 2 |
| [SCH24XNb](/materials/jis/sch24xnb "SCH24XNb") | — | 0.3 - 0.5 | 1 - 2.5 | max 0.04 | max 0.03 | 24 - 27 | max 2 |
| [SCH34](/materials/jis/sch34 "SCH34") | — | 0.05 - 0.12 | max 1.2 | max 0.04 | max 0.03 | 19 - 23 | max 1.2 |
| [SCH45](/materials/jis/sch45 "SCH45") | — | 0.35 - 0.65 | max 2 | max 0.04 | max 0.03 | 13 - 19 | max 1.3 |
| [SCH2X1](/materials/jis/sch2x1 "SCH2X1") | — | 0.3 - 0.5 | 1 - 2.5 | max 0.04 | max 0.03 | 23 - 26 | 0.5 - 1 |
| [SSC19A](/materials/ks/ssc19a "SSC19A") | — | max 0.03 | max 2 | max 0.04 | max 0.04 | 17 - 21 | max 2 |
| [SCH5](/materials/jis/sch5 "SCH5") | — | 0.3 - 0.5 | 1 - 2.5 | max 0.04 | max 0.03 | 16 - 19 | 0.5 - 1 |
| [SSC21](/materials/ks/ssc21 "SSC21") | — | — | — | — | — | — | — |
| [SCH12](/materials/jis/sch12 "SCH12") | — | 0.2 - 0.4 | max 2 | max 0.04 | max 0.04 | 18 - 23 | max 2 |
| [CF10](/materials/ks/cf10 "CF10") | — | 0.04 - 0.1 | max 2 | max 0.04 | max 0.04 | 18 - 21 | max 1.5 |
| [SCH13X](/materials/jis/sch13x "SCH13X") | — | 0.3 - 0.5 | 1 - 2.5 | max 0.04 | max 0.03 | 24 - 27 | max 2 |
| [HRSC21](/materials/ks/hrsc21 "HRSC21") | — | 0.25 - 0.35 | max 1.75 | max 0.04 | max 0.04 | 23 - 27 | max 1.5 |
| [SCH17](/materials/jis/sch17 "SCH17") | — | 0.2 - 0.5 | max 2 | max 0.04 | max 0.04 | 26 - 30 | max 2 |
| [SCH22](/materials/jis/sch22 "SCH22") | — | 0.35 - 0.45 | max 1.75 | max 0.04 | max 0.04 | 23 - 27 | max 1.5 |
| [SCH24X](/materials/jis/sch24x "SCH24X") | — | 0.3 - 0.5 | 1 - 2.5 | max 0.04 | max 0.03 | 24 - 27 | max 2 |
| [SCH33](/materials/jis/sch33 "SCH33") | — | 0.25 - 0.5 | 1 - 2.5 | max 0.04 | max 0.03 | 23 - 25 | max 2 |
| [SCH44](/materials/jis/sch44 "SCH44") | — | 0.4 - 0.6 | 0.5 - 2 | max 0.04 | max 0.03 | 16 - 21 | max 1.5 |
| [SCH2](/materials/jis/sch2 "SCH2") | — | max 0.4 | max 2 | max 0.04 | max 0.04 | 25 - 28 | max 1 |
| [SCH43](/materials/jis/sch43 "SCH43") | — | max 0.1 | max 0.5 | max 0.02 | max 0.02 | 47 - 52 | max 0.5 |
| [SCH4](/materials/jis/sch4 "SCH4") | — | 0.2 - 0.35 | 1 - 2.5 | max 0.04 | max 0.04 | 6 - 8 | 0.5 - 1 |
| [SSC14A](/materials/ks/ssc14a "SSC14A") | — | max 0.08 | max 1.5 | max 0.04 | max 0.04 | 18 - 21 | max 1.5 |
| [SCH11X](/materials/jis/sch11x "SCH11X") | — | 0.3 - 0.5 | 1 - 2.5 | max 0.04 | max 0.03 | 25 - 28 | max 1.5 |
| [SSC23](/materials/ks/ssc23 "SSC23") | — | max 0.07 | max 2 | max 0.04 | max 0.04 | 19 - 22 | max 2 |
| [SCH13A](/materials/jis/sch13a "SCH13A") | — | 0.25 - 0.5 | max 1.75 | max 0.04 | max 0.04 | 23 - 26 | max 2.5 |
| [CF10SMnN](/materials/ks/cf10smnn "CF10SMnN") | — | max 0.01 | 3.5 - 4.5 | max 0.06 | max 0.03 | 16 - 18 | 7 - 9 |
| [SCH16](/materials/jis/sch16 "SCH16") | — | 0.2 - 0.35 | max 2.5 | max 0.04 | max 0.04 | 13 - 17 | max 2 |
| [SCH20](/materials/jis/sch20 "SCH20") | — | 0.35 - 0.75 | max 2.5 | max 0.04 | max 0.04 | 17 - 21 | max 2 |
| [SCH21](/materials/jis/sch21 "SCH21") | — | 0.25 - 0.35 | max 1.75 | max 0.04 | max 0.04 | 23 - 27 | max 1.5 |
| [SCH24](/materials/jis/sch24 "SCH24") | — | 0.35 - 0.75 | max 2 | max 0.04 | max 0.04 | 24 - 28 | max 2 |
| [SCH32](/materials/jis/sch32 "SCH32") | — | 0.15 - 0.35 | 1 - 2.5 | max 0.04 | max 0.03 | 19 - 21 | max 2 |
| [SCH42](/materials/jis/sch42 "SCH42") | — | 0.35 - 0.55 | 1 - 2.5 | max 0.04 | max 0.03 | 27 - 30 | max 1.5 |
| [SCH1X](/materials/jis/sch1x "SCH1X") | — | 0.3 - 0.5 | 1 - 2.5 | max 0.04 | max 0.03 | 12 - 14 | 0.5 - 1 |
| [SCH47](/materials/jis/sch47 "SCH47") | — | max 0.5 | max 1 | max 0.04 | max 0.03 | 25 - 30 | max 1 |
| [SCH3](/materials/jis/sch3 "SCH3") | — | max 0.4 | max 2 | max 0.04 | max 0.04 | 12 - 15 | max 1 |
| [SSC16A](/materials/ks/ssc16a "SSC16A") | — | max 0.03 | max 1.5 | max 0.04 | max 0.04 | 17 - 21 | max 1.5 |
| [SCH11](/materials/jis/sch11 "SCH11") | — | max 0.4 | max 2 | max 0.04 | max 0.04 | 24 - 28 | max 1 |
| [SSC18](/materials/ks/ssc18 "SSC18") | — | max 0.02 | max 2 | max 0.04 | max 0.04 | 23 - 27 | max 2 |
| [SCH13](/materials/jis/sch13 "SCH13") | — | 0.2 - 0.5 | max 2 | max 0.04 | max 0.04 | 24 - 28 | max 2 |
| [CF10MC](/materials/ks/cf10mc "CF10MC") | — | — | — | — | — | — | — |
| [SCH15X](/materials/jis/sch15x "SCH15X") | — | 0.3 - 0.5 | 1 - 2.5 | max 0.04 | max 0.03 | 16 - 18 | max 2 |
| [SCH19](/materials/jis/sch19 "SCH19") | — | 0.2 - 0.5 | max 2 | max 0.04 | max 0.04 | 19 - 23 | max 2 |
| [SCH20XNb](/materials/jis/sch20xnb "SCH20XNb") | — | 0.3 - 0.5 | 1 - 2.5 | max 0.04 | max 0.03 | 18 - 21 | max 2 |
| [SCH23](/materials/jis/sch23 "SCH23") | — | 0.2 - 0.6 | max 2 | max 0.04 | max 0.04 | 28 - 32 | max 2 |
| [SCH31](/materials/jis/sch31 "SCH31") | — | 0.15 - 0.35 | 1 - 2.5 | max 0.04 | max 0.03 | 17 - 19 | max 2 |
| [SCH41](/materials/jis/sch41 "SCH41") | — | 0.35 - 0.6 | max 1 | max 0.04 | max 0.03 | 19 - 22 | max 2 |
| [SCH1](/materials/jis/sch1 "SCH1") | — | 0.2 - 0.4 | 1.5 - 3 | max 0.04 | max 0.04 | 12 - 15 | max 1 |
| [SCH46](/materials/jis/sch46 "SCH46") | — | 0.44 - 0.48 | 1 - 2 | max 0.04 | max 0.03 | 24 - 26 | max 2 |
| [SCH2X2](/materials/jis/sch2x2 "SCH2X2") | — | 0.3 - 0.5 | 1 - 2.5 | max 0.04 | max 0.03 | 27 - 30 | 0.5 - 1 |
| [SSC13A](/materials/ks/ssc13a "SSC13A") | — | max 0.08 | max 2 | max 0.04 | max 0.04 | 18 - 21 | max 1.5 |

 Page 1 of 2[Next](/categories/heat-resistant-cast-steels/page/2 "Next")

## Standards covering this category

 15

- [**JIS***53 grades*](/materials/jis "JIS — 53 grades in this category")
- [**DIN / EN***25 grades*](/materials/din-en "DIN / EN — 25 grades in this category")
- [**KS***15 grades*](/materials/ks "KS — 15 grades in this category")
- [**UNS***13 grades*](/materials/uns "UNS — 13 grades in this category")
- [**AISI / SAE***10 grades*](/materials/aisi-sae "AISI / SAE — 10 grades in this category")
- [**BS***5 grades*](/materials/bs "BS — 5 grades in this category")
- [**GOST***4 grades*](/materials/gost "GOST — 4 grades in this category")
- [**ČSN***4 grades*](/materials/csn "ČSN — 4 grades in this category")
- [**UNI***3 grades*](/materials/uni "UNI — 3 grades in this category")
- [**AFNOR***2 grades*](/materials/afnor "AFNOR — 2 grades in this category")
- [**GB***2 grades*](/materials/gb "GB — 2 grades in this category")
- [**PN***2 grades*](/materials/pn "PN — 2 grades in this category")
- [**UNE***1 grade*](/materials/une "UNE — 1 grade in this category")
- [**MSZ***1 grade*](/materials/msz "MSZ — 1 grade in this category")
- [**STAS***1 grade*](/materials/stas "STAS — 1 grade in this category")

## Property ranges

 12

| Property | Unit | Min | Max | Grades |
|---|---|---|---|---|
| Rm | N/mm² | 150 | 590 | 53 |
| Re | N/mm² | 170 | 320 | 46 |
| A | % | 3 | 35 | 46 |
| A5 | % | 20 | 25 | 3 |
| Z | % | 25 | 28 | 3 |
| HB | — | 130 | 400 | 11 |
| rho | g/cm³ | 7 | 7.85 | 27 |
| E | GPa | 90 | 196 | 3 |
| alpha | 10^-6/K | 9 | 18.4 | 3 |
| lambda | W/(m·K) | 54 | 59 | 2 |
| cp | J/(kg·K) | 460 | 480 | 2 |
| rho\_el | nΩ·m | 860 | 860 | 1 |

Derived from 53 grades in this category with a recorded value.

## Composition range

 14

| Property | Unit | Min | Max | Grades |
|---|---|---|---|---|
| C | % | 0.01 | 1.8 | 80 |
| N | % | 0.08 | 0.18 | 2 |
| Si | % | 0.5 | 4.5 | 80 |
| P | % | 0.02 | 0.06 | 79 |
| S | % | 0.02 | 0.04 | 79 |
| Cr | % | 6 | 52 | 80 |
| Mn | % | 0.5 | 9 | 80 |
| Fe | % | 9.38 | 22.25 | 4 |
| Co | % | 14 | 52 | 5 |
| Ni | % | 0.5 | 69 | 78 |
| Cu | % | 0.5 | 4 | 2 |
| Nb | % | 0.5 | 2.5 | 11 |
| Mo | % | 0.15 | 3 | 69 |
| W | % | 2 | 6 | 4 |

Derived from 80 grades in this category with a recorded value.

## Related guides

 5

- [**Heat Treatment Fundamentals for Steel**](/wiki/heat-treatment/heat-treatment-fundamentals "Heat Treatment Fundamentals for Steel")
- [**Steel Heat Treatment Process Selection: A Standards-Based Guide**](/wiki/heat-treatment/steel-heat-treatment-process-selection "Steel Heat Treatment Process Selection: A Standards-Based Guide")
- [**Steel Microstructures After Heat Treatment**](/wiki/steel-families/steel-microstructures-after-heat-treatment "Steel Microstructures After Heat Treatment")
- [**Steel Heat Treatment Atmospheres and Surface Protection**](/wiki/heat-treatment/steel-heat-treatment-atmospheres-and-surface-protection "Steel Heat Treatment Atmospheres and Surface Protection")
- [**Heat Treatment Distortion and Residual Stress in Steel**](/wiki/heat-treatment/heat-treatment-distortion-and-residual-stress-in-steel "Heat Treatment Distortion and Residual Stress in Steel")