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Category · 55 grades

# Low-temperature structural steels

Low-temperature structural steels are structural steels designed to retain toughness and reliable load-bearing performance in cold service. Their resistance to brittle fracture at low temperatures makes them suitable for structures, pressure-containing equipment and other components exposed to severe cold.

| Grade | Material no. | C | Si | P | S | Mn | Ni |
|---|---|---|---|---|---|---|---|
| [STBL450](/materials/jis/stbl450 "STBL450") | — | max 0.18 | 0.1 - 0.35 | max 0.03 | max 0.03 | 0.3 - 0.6 | 3.2 - 3.8 |
| [SLAI360](/materials/ks/slai360 "SLAI360") | — | max 0.18 | 0.15 - 0.55 | max 0.035 | max 0.035 | 0.8 - 1.6 | — |
| [SLA235B](/materials/jis/sla235b "SLA235B") | — | max 0.15 | max 0.3 | max 0.025 | max 0.02 | 0.7 - 1.5 | — |
| [SLA410](/materials/jis/sla410 "SLA410") | — | max 0.18 | max 0.55 | max 0.025 | max 0.02 | 0.8 - 1.6 | — |
| [SFL1](/materials/jis/sfl1 "SFL1") | — | max 0.3 | max 0.35 | max 0.03 | max 0.03 | max 1.35 | — |
| [SL3N255](/materials/jis/sl3n255 "SL3N255") | — | max 0.15 | max 0.3 | max 0.015 | max 0.015 | max 0.7 | 3.25 - 3.75 |
| [SL7N590](/materials/jis/sl7n590 "SL7N590") | — | max 0.12 | max 0.3 | max 0.015 | max 0.015 | max 1.2 | 6 - 7.5 |
| [SLAI325](/materials/ks/slai325 "SLAI325") | — | max 0.16 | 0.15 - 0.55 | max 0.035 | max 0.035 | 0.8 - 1.6 | — |
| [SPLT700](/materials/ks/splt700 "SPLT700") | — | max 0.13 | 0.1 - 0.35 | max 0.03 | max 0.03 | max 0.9 | 8.5 - 9.5 |
| [SLA235A](/materials/jis/sla235a "SLA235A") | — | max 0.15 | max 0.3 | max 0.025 | max 0.02 | 0.7 - 1.5 | — |
| [SLA365](/materials/jis/sla365 "SLA365") | — | max 0.18 | max 0.55 | max 0.025 | max 0.02 | 0.8 - 1.6 | — |
| [STPL690](/materials/jis/stpl690 "STPL690") | — | max 0.13 | 0.1 - 0.35 | max 0.03 | max 0.03 | max 0.9 | 8.5 - 9.5 |
| [SL2N255](/materials/jis/sl2n255 "SL2N255") | — | max 0.17 | max 0.3 | max 0.015 | max 0.015 | max 0.7 | 2.1 - 2.5 |
| [SL5N590](/materials/jis/sl5n590 "SL5N590") | — | max 0.13 | max 0.3 | max 0.015 | max 0.015 | max 1.5 | 4.75 - 6 |
| [STBL380](/materials/jis/stbl380 "STBL380") | — | max 0.25 | max 0.35 | max 0.035 | max 0.035 | max 1.35 | — |
| [SLAI235](/materials/ks/slai235 "SLAI235") | — | max 0.15 | 0.15 - 0.3 | max 0.035 | max 0.035 | 0.7 - 1.5 | — |
| [SPLT460](/materials/ks/splt460 "SPLT460") | — | max 0.18 | 0.1 - 0.35 | max 0.03 | max 0.03 | 0.3 - 0.6 | 3.2 - 3.8 |
| [SLA325B](/materials/jis/sla325b "SLA325B") | — | max 0.16 | max 0.55 | max 0.025 | max 0.02 | 0.8 - 1.6 | — |
| [STPL450](/materials/jis/stpl450 "STPL450") | — | max 0.18 | 0.1 - 0.35 | max 0.03 | max 0.03 | 0.3 - 0.6 | 3.2 - 3.8 |
| [SFL3](/materials/jis/sfl3 "SFL3") | — | max 0.2 | max 0.35 | max 0.03 | max 0.03 | max 0.9 | 3.25 - 3.75 |
| [SL3N440](/materials/jis/sl3n440 "SL3N440") | — | max 0.15 | max 0.3 | max 0.015 | max 0.015 | max 0.7 | 3.25 - 3.75 |
| [SL9N590](/materials/jis/sl9n590 "SL9N590") | — | max 0.12 | max 0.3 | max 0.015 | max 0.015 | max 0.9 | 8.5 - 9.5 |
| [STBL690](/materials/jis/stbl690 "STBL690") | — | max 0.13 | 0.1 - 0.35 | max 0.03 | max 0.03 | max 0.9 | 8.5 - 9.5 |
| [SPLT390](/materials/ks/splt390 "SPLT390") | — | max 0.25 | max 0.35 | max 0.035 | max 0.035 | max 1.35 | — |
| [SLA325A](/materials/jis/sla325a "SLA325A") | — | max 0.16 | max 0.55 | max 0.025 | max 0.02 | 0.8 - 1.6 | — |
| [STPL380](/materials/jis/stpl380 "STPL380") | — | max 0.25 | max 0.35 | max 0.035 | max 0.035 | max 1.35 | — |
| [SFL2](/materials/jis/sfl2 "SFL2") | — | max 0.3 | max 0.35 | max 0.03 | max 0.03 | max 1.35 | — |
| [SL3N275](/materials/jis/sl3n275 "SL3N275") | — | max 0.17 | max 0.3 | max 0.015 | max 0.015 | max 0.7 | 3.25 - 3.75 |
| [SL9N520](/materials/jis/sl9n520 "SL9N520") | — | max 0.12 | max 0.3 | max 0.015 | max 0.015 | max 0.9 | 8.5 - 9.5 |
| [22Mn6](/materials/din-en/22mn6 "22Mn6") | [1.1160](/materials/material-no/1.1160 "1.1160") | 0,18-0,25 | 0,15-0,30 | 0,035 | 0,035 | 1,30-1,70 | — |
| [20Mn6](/materials/din-en/20mn6 "20Mn6") | [1.1169](/materials/material-no/1.1169 "1.1169") | 0,17-0,23 | 0,30-0,60 | 0,035 | 0,035 | 1,30-1,60 | — |
| [24Ni4](/materials/din-en/24ni4 "24Ni4") | [1.5613](/materials/material-no/1.5613 "1.5613") | 0,20-0,28 | 0,15-0,35 | 0,035 | 0,035 | 0,60-0,80 | 1,00-1,30 |
| [34Ni5](/materials/din-en/34ni5 "34Ni5") | [1.5620](/materials/material-no/1.5620 "1.5620") | 0,30-0,38 | 0,15-0,35 | 0,035 | 0,035 | 0,30-0,50 | 1,20-1,50 |
| [G10Ni6](/materials/din-en/g10ni6 "G10Ni6") | [1.5621](/materials/material-no/1.5621 "1.5621") | 0,06-0,12 | ≤0,60 | 0,015 | 0,015 | 0,50-0,80 | 1,30-1,80 |
| [1.5622](/materials/material-no/1.5622 "1.5622") | [1.5622](/materials/material-no/1.5622 "1.5622") | ≤0,18 | 0,10-0,35 | 0,035 | 0,035 | 0,30-0,60 | 1,30-1,60 |
| [GS-24Ni8](/materials/din-en/gs-24ni8 "GS-24Ni8") | [1.5633](/materials/material-no/1.5633 "1.5633") | 0,20-0,28 | 0,30-0,50 | 0,035 | 0,035 | 0,60-0,80 | 1,90-2,20 |
| [24Ni8](/materials/din-en/24ni8 "24Ni8") | [1.5633](/materials/material-no/1.5633 "1.5633") | 0,20-0,28 | 0,15-0,35 | 0,035 | 0,035 | 0,60-0,80 | 1,90-2,20 |
| [75Ni8](/materials/din-en/75ni8 "75Ni8") | [1.5634](/materials/material-no/1.5634 "1.5634") | 0,72-0,78 | 0,15-0,35 | 0,025 | 0,025 | 0,30-0,50 | 1,80-2,10 |
| [12Ni9](/materials/din-en/12ni9 "12Ni9") | [1.5635](/materials/material-no/1.5635 "1.5635") | ≤0,15 | 0,15-0,30 | 0,03 | 0,03 | ≤0,70 | 2,10-2,50 |
| [G9Ni10](/materials/din-en/g9ni10 "G9Ni10") | [1.5636](/materials/material-no/1.5636 "1.5636") | 0,06-0,12 | ≤0,60 | 0,02 | 0,015 | 0,50-0,80 | 2,00-3,00 |
| [1.5637](/materials/material-no/1.5637 "1.5637") | [1.5637](/materials/material-no/1.5637 "1.5637") | ≤0,15 | ≤0,35 | 0,02 | 0,01 | 0,30-0,80 | 3,25-3,75 |
| [G9Ni14](/materials/din-en/g9ni14 "G9Ni14") | [1.5638](/materials/material-no/1.5638 "1.5638") | 0,06-0,12 | ≤0,60 | 0,02 | 0,015 | 0,50-0,80 | 3,00-4,00 |
| [16Ni14](/materials/din-en/16ni14 "16Ni14") | [1.5639](/materials/material-no/1.5639 "1.5639") | 0,12-0,19 | 0,10-0,35 | 0,035 | 0,035 | 0,30-0,60 | 3,20-3,80 |
| [1.5662](/materials/material-no/1.5662 "1.5662") | [1.5662](/materials/material-no/1.5662 "1.5662") | ≤0,10 | ≤0,50 | 0,025 | 0,01 | 0,50-0,70 | 8,50-9,50 |
| [1.5662](/materials/material-no/1.5662 "1.5662") | [1.5662](/materials/material-no/1.5662 "1.5662") | ≤0,10 | ≤0,35 | 0,02 | 0,01 | 0,30-0,80 | 8,50-10,0 |
| [X7Ni9](/materials/din-en/x7ni9 "X7Ni9") | [1.5663](/materials/material-no/1.5663 "1.5663") | ≤0,10 | ≤0,35 | 0,015 | 0,005 | 0,30-0,80 | 8,50-10,0 |
| [1.5680](/materials/material-no/1.5680 "1.5680") | [1.5680](/materials/material-no/1.5680 "1.5680") | ≤0,15 | ≤0,35 | 0,02 | 0,01 | 0,30-0,80 | 4,75-5,25 |
| [GX9Ni5](/materials/din-en/gx9ni5 "GX9Ni5") | [1.5681](/materials/material-no/1.5681 "1.5681") | 0,06-0,12 | ≤0,60 | 0,02 | 0,02 | 0,50-0,80 | 4,50-5,50 |
| [X10Ni9](/materials/din-en/x10ni9 "X10Ni9") | [1.5682](/materials/material-no/1.5682 "1.5682") | ≤0,13 | 0,15-0,35 | 0,02 | 0,01 | 0,30-0,80 | 8,50-9,50 |
| [11MnNi5-3](/materials/din-en/11mnni5-3 "11MnNi5-3") | [1.6212](/materials/material-no/1.6212 "1.6212") | ≤0,14 | ≤0,50 | 0,025 | 0,015 | 0,70-1,50 | 0,30-0,80 |

 Page 1 of 2[Next](/categories/low-temperature-structural-steels/page/2 "Next")

## Standards covering this category

 17

- [**JIS***27 grades*](/materials/jis "JIS — 27 grades in this category")
- [**DIN / EN***26 grades*](/materials/din-en "DIN / EN — 26 grades in this category")
- [**KS***17 grades*](/materials/ks "KS — 17 grades in this category")
- [**UNS***16 grades*](/materials/uns "UNS — 16 grades in this category")
- [**AISI / SAE***10 grades*](/materials/aisi-sae "AISI / SAE — 10 grades in this category")
- [**AFNOR***10 grades*](/materials/afnor "AFNOR — 10 grades in this category")
- [**UNE***6 grades*](/materials/une "UNE — 6 grades in this category")
- [**BS***5 grades*](/materials/bs "BS — 5 grades in this category")
- [**ASTM***4 grades*](/materials/astm "ASTM — 4 grades in this category")
- [**GB***3 grades*](/materials/gb "GB — 3 grades in this category")
- [**UNI***3 grades*](/materials/uni "UNI — 3 grades in this category")
- [**ČSN***3 grades*](/materials/csn "ČSN — 3 grades in this category")
- [**ISO***2 grades*](/materials/iso "ISO — 2 grades in this category")
- [**GOST***2 grades*](/materials/gost "GOST — 2 grades in this category")
- [**MSZ***2 grades*](/materials/msz "MSZ — 2 grades in this category")
- [**SAE AMS***1 grade*](/materials/ams "SAE AMS — 1 grade in this category")
- [**SRPS***1 grade*](/materials/srps "SRPS — 1 grade in this category")

## Property ranges

 10

| Property | Unit | Min | Max | Grades |
|---|---|---|---|---|
| ReH | N/mm² | 265 | 750 | 8 |
| Rm | N/mm² | 380 | 1800 | 39 |
| A80 | % | 13 | 13 | 1 |
| Re | N/mm² | 205 | 590 | 29 |
| A | % | 10 | 35 | 34 |
| Z | % | 30 | 38 | 3 |
| HB | — | 179 | 223 | 2 |
| HRB | — | 85 | 90 | 2 |
| HV | — | 210 | 210 | 1 |
| rho | g/cm³ | 7.85 | 7.85 | 26 |

Derived from 39 grades in this category with a recorded value.

## Composition range

 12

| Property | Unit | Min | Max | Grades |
|---|---|---|---|---|
| C | % | 0.06 | 0.78 | 55 |
| Al | % | 0.02 | 0.3 | 3 |
| Si | % | 0.1 | 0.6 | 55 |
| P | % | 0.015 | 0.035 | 55 |
| S | % | 0.005 | 0.035 | 55 |
| V | % | 0.01 | 0.05 | 11 |
| Cr | % | 0.15 | 1.2 | 8 |
| Mn | % | 0.3 | 1.7 | 55 |
| Ni | % | 0.3 | 10 | 37 |
| Cu | % | 0.3 | 0.3 | 2 |
| Nb | % | 0.05 | 0.05 | 2 |
| Mo | % | 0.1 | 0.35 | 9 |

Derived from 55 grades in this category with a recorded value.

## Related guides

 2

- [**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")
- [**Steel Thermal Expansion and Temperature-Dependent Properties**](/wiki/calculated-values/steel-thermal-expansion-and-temperature-dependent-properties "Steel Thermal Expansion and Temperature-Dependent Properties")