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Category · 31 grades

# Non-magnetic steels

Non-magnetic steels are alloy steels designed to have very low magnetic response while retaining useful mechanical strength and ductility. They are used for components and structures where magnetic interference must be minimised, including specialised electrical, laboratory and mechanical equipment.

| Grade | Material no. | C | Si | Mn | P | Cr | S |
|---|---|---|---|---|---|---|---|
| [X120Mn12](/materials/din-en/x120mn12 "X120Mn12") | [1.3802](/materials/material-no/1.3802 "1.3802") | 1,10-1,30 | ≤0,50 | 11,5-13,5 | 0,06 | ≤0,50 | 0,03 |
| [GX 120 Mn 13](/materials/din-en/g-x120mn13 "GX 120 Mn 13") | [1.3802](/materials/material-no/1.3802 "1.3802") | 1,05-1,35 | 0,30-0,90 | 11,0-14,0 | 0,06 | — | 0,045 |
| [X35Mn21](/materials/din-en/x35mn21 "X35Mn21") | [1.3805](/materials/material-no/1.3805 "1.3805") | 0,30-0,40 | ≤1,00 | 19,0-22,0 | 0,06 | — | 0,03 |
| [X20Cr25](/materials/din-en/x20cr25 "X20Cr25") | [1.3810](/materials/material-no/1.3810 "1.3810") | ≤0,25 | 0,50-2,00 | ≤0,50 | — | 24,0-26,0 | — |
| [X10Cr25](/materials/din-en/x10cr25 "X10Cr25") | [1.3811](/materials/material-no/1.3811 "1.3811") | ≤0,15 | ≤1,00 | ≤1,00 | — | 24,0-26,0 | — |
| [X 40 MnCr 18 5](/materials/din-en/x-40-mncr-18-5 "X 40 MnCr 18 5") | [1.3812](/materials/material-no/1.3812 "1.3812") | 0,30-0,50 | ≤0,80 | 17,0-19,0 | 0,1 | 5,00-6,00 | 0,05 |
| [X40MnCrN19](/materials/din-en/x40mncrn19 "X40MnCrN19") | [1.3813](/materials/material-no/1.3813 "1.3813") | 0,30-0,50 | ≤0,80 | 17,0-19,0 | 0,1 | 3,00-5,00 | 0,03 |
| [X8CrMnN19-19](/materials/din-en/x8crmnn19-19 "X8CrMnN19-19") | [1.3815](/materials/material-no/1.3815 "1.3815") | ≤0,12 | ≤1,00 | 17,5-20,0 | 0,05 | 17,5-20,0 | — |
| [X8CrMnN18-18](/materials/din-en/x8crmnn18-18 "X8CrMnN18-18") | [1.3816](/materials/material-no/1.3816 "1.3816") | ≤0,12 | ≤1,00 | 17,5-20,0 | 0,06 | 17,5-20,0 | 0,03 |
| [X40MnCr18](/materials/din-en/x40mncr18 "X40MnCr18") | [1.3817](/materials/material-no/1.3817 "1.3817") | 0,30-0,50 | ≤1,00 | 17,0-19,0 | 0,06 | 3,00-5,00 | 0,03 |
| [X55MnCrN18-4](/materials/din-en/x55mncrn18-4 "X55MnCrN18-4") | [1.3818](/materials/material-no/1.3818 "1.3818") | 0,50-0,60 | ≤1,00 | 17,5-20,0 | 0,06 | 4,00-5,00 | 0,03 |
| [X50MnCrV20-14](/materials/din-en/x50mncrv20-14 "X50MnCrV20-14") | [1.3819](/materials/material-no/1.3819 "1.3819") | 0,40-0,60 | ≤1,00 | 19,0-21,0 | 0,1 | 13,0-15,0 | 0,03 |
| [X8CrMnN20-10](/materials/din-en/x8crmnn20-10 "X8CrMnN20-10") | [1.3820](/materials/material-no/1.3820 "1.3820") | ≤0,12 | ≤1,00 | 9,00-11,0 | 0,06 | 18,0-20,0 | 0,03 |
| [8SiCr7-3](/materials/din-en/8sicr7-3 "8SiCr7-3") | [1.3821](/materials/material-no/1.3821 "1.3821") | ≤0,10 | 1,50-2,00 | 0,20-0,60 | 0,025 | 0,50-1,00 | 0,025 |
| [X2CrNiMnMoNNb21-15-7-3](/materials/din-en/x2crnimnmonnb21-15-7-3 "X2CrNiMnMoNNb21-15-7-3") | [1.3914](/materials/material-no/1.3914 "1.3914") | ≤0,030 | ≤0,75 | 6,00-8,00 | 0,025 | 20,0-22,0 | 0,01 |
| [X4CrNi18-13](/materials/din-en/x4crni18-13 "X4CrNi18-13") | [1.3941](/materials/material-no/1.3941 "1.3941") | ≤0,05 | ≤1,00 | ≤2,00 | 0,045 | 16,5-18,5 | 0,03 |
| [X4CrNiMnMoN19-13-8](/materials/din-en/x4crnimnmon19-13-8 "X4CrNiMnMoN19-13-8") | [1.3948](/materials/material-no/1.3948 "1.3948") | ≤0,05 | ≤1,00 | 7,00-10,0 | 0,03 | 17,5-20,0 | 0,02 |
| [X5MnCrNiN18-13](/materials/din-en/x5mncrnin18-13 "X5MnCrNiN18-13") | [1.3949](/materials/material-no/1.3949 "1.3949") | ≤0,08 | ≤1,00 | 17,0-19,0 | 0,06 | 12,0-14,0 | 0,03 |
| [X2CrNiMoN22-15](/materials/din-en/x2crnimon22-15 "X2CrNiMoN22-15") | [1.3951](/materials/material-no/1.3951 "1.3951") | ≤0,03 | 1,00-1,70 | ≤1,20 | 0,03 | 21,5-24,0 | 0,01 |
| [X2CrNiMoN18-14-3](/materials/din-en/x2crnimon18-14-3 "X2CrNiMoN18-14-3") | [1.3952](/materials/material-no/1.3952 "1.3952") | ≤0,03 | ≤1,00 | ≤2,00 | 0,045 | 16,5-18,5 | 0,015 |
| [X2CrNiMo18-15](/materials/din-en/x2crnimo18-15 "X2CrNiMo18-15") | [1.3953](/materials/material-no/1.3953 "1.3953") | ≤0,04 | ≤1,00 | ≤2,00 | 0,045 | 16,5-18,5 | 0,03 |
| [X2CrNiMoNbN21-15](/materials/din-en/x2crnimonbn21-15 "X2CrNiMoNbN21-15") | [1.3957](/materials/material-no/1.3957 "1.3957") | ≤0,03 | ≤1,00 | 0,50-3,00 | 0,045 | 20,0-22,0 | 0,03 |
| [X5CrNi18-11](/materials/din-en/x5crni18-11 "X5CrNi18-11") | [1.3958](/materials/material-no/1.3958 "1.3958") | ≤0,07 | ≤1,00 | ≤2,00 | 0,045 | 17,0-19,0 | 0,03 |
| [X15CrNiMn12-10](/materials/din-en/x15crnimn12-10 "X15CrNiMn12-10") | [1.3962](/materials/material-no/1.3962 "1.3962") | 0,05-0,20 | ≤0,60 | 5,50-6,50 | 0,045 | 10,5-12,5 | 0,03 |
| [X2CrNiMnMoNNb21-16-5-3](/materials/din-en/x2crnimnmonnb21-16-5-3 "X2CrNiMnMoNNb21-16-5-3") | [1.3964](/materials/material-no/1.3964 "1.3964") | ≤0,03 | ≤1,00 | 4,00-6,00 | 0,025 | 20,0-21,5 | 0,01 |
| [X8CrMnNi18-8](/materials/din-en/x8crmnni18-8 "X8CrMnNi18-8") | [1.3965](/materials/material-no/1.3965 "1.3965") | ≤0,10 | ≤1,00 | 7,50-9,50 | 0,045 | 17,0-19,0 | 0,03 |
| [X12MnCr18-12](/materials/din-en/x12mncr18-12 "X12MnCr18-12") | [1.3968](/materials/material-no/1.3968 "1.3968") | ≤0,15 | ≤1,00 | 17,0-19,0 | 0,08 | 11,0-13,0 | 0,03 |
| [X2CrNiMnMoNNb23-17-6-3](/materials/din-en/x2crnimnmonnb23-17-6-3 "X2CrNiMnMoNNb23-17-6-3") | [1.3974](/materials/material-no/1.3974 "1.3974") | ≤0,03 | ≤1,00 | 4,50-6,50 | 0,025 | 21,0-24,5 | 0,01 |
| [X5NiCrTiMoV26-15](/materials/din-en/x5nicrtimov26-15 "X5NiCrTiMoV26-15") | [1.3980](/materials/material-no/1.3980 "1.3980") | ≤0,08 | ≤1,00 | ≤2,00 | 0,03 | 13,5-16,0 | 0,015 |
| [NiCo 29 18](/materials/din-en/nico-29-18 "NiCo 29 18") | [1.3981](/materials/material-no/1.3981 "1.3981") | ≤0,05 | ≤0,30 | ≤0,50 | — | — | — |
| [X12CrMnNiN18-9-5](/materials/din-en/x12crmnnin18-9-5 "X12CrMnNiN18-9-5") | [1.4373](/materials/material-no/1.4373 "1.4373") | ≤0,15 | ≤1,00 | 7,50-10,5 | 0,045 | 17,0-19,0 | 0,015 |

## Standards covering this category

 15

- [**DIN / EN***31 grades*](/materials/din-en "DIN / EN — 31 grades in this category")
- [**ASTM***6 grades*](/materials/astm "ASTM — 6 grades in this category")
- [**UNS***5 grades*](/materials/uns "UNS — 5 grades in this category")
- [**AISI / SAE***5 grades*](/materials/aisi-sae "AISI / SAE — 5 grades in this category")
- [**ČSN***5 grades*](/materials/csn "ČSN — 5 grades in this category")
- [**BS***4 grades*](/materials/bs "BS — 4 grades in this category")
- [**AFNOR***4 grades*](/materials/afnor "AFNOR — 4 grades in this category")
- [**GOST***4 grades*](/materials/gost "GOST — 4 grades in this category")
- [**JIS***2 grades*](/materials/jis "JIS — 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")
- [**ISO***1 grade*](/materials/iso "ISO — 1 grade in this category")
- [**SAE AMS***1 grade*](/materials/ams "SAE AMS — 1 grade in this category")
- [**STN***1 grade*](/materials/stn "STN — 1 grade in this category")
- [**KS***1 grade*](/materials/ks "KS — 1 grade in this category")

## Property ranges

 9

| Property | Unit | Min | Max | Grades |
|---|---|---|---|---|
| Rm | N/mm² | 520 | 980 | 2 |
| Re | N/mm² | 275 | 345 | 2 |
| A | % | 40 | 40 | 1 |
| A5 | % | 15 | 45 | 1 |
| Z | % | 45 | 55 | 2 |
| HB | — | 207 | 207 | 1 |
| HRB | — | 95 | 95 | 1 |
| HV | — | 218 | 218 | 1 |
| rho | g/cm³ | 7.85 | 8.11 | 31 |

Derived from 31 grades in this category with a recorded value.

## Composition range

 16

| Property | Unit | Min | Max | Grades |
|---|---|---|---|---|
| B | % | 0.003 | 0.01 | 1 |
| C | % | 0.03 | 1.35 | 31 |
| N | % | 0.05 | 1 | 20 |
| Al | % | 0.04 | 0.35 | 3 |
| Si | % | 0.3 | 2 | 31 |
| P | % | 0.025 | 0.1 | 28 |
| S | % | 0.01 | 0.05 | 27 |
| Ti | % | 1.9 | 2.3 | 1 |
| V | % | 0.1 | 1.3 | 3 |
| Cr | % | 0.5 | 26 | 28 |
| Mn | % | 0.2 | 22 | 31 |
| Co | % | 16 | 18 | 2 |
| Ni | % | 0.3 | 30 | 24 |
| Cu | % | 0.5 | 0.5 | 1 |
| Nb | % | 0.1 | 0.3 | 7 |
| Mo | % | 0.2 | 3.5 | 12 |

Derived from 31 grades in this category with a recorded value.

## Related guides

 1

- [**Electrical Steels: Grades, Magnetic Properties, and Core-Loss Control**](/wiki/steel-families/electrical-steels-grades-magnetic-properties-and-core-loss-control "Electrical Steels: Grades, Magnetic Properties, and Core-Loss Control")