Plat keluli aloi terutamanya terdiri daripada bahan selain karbon dan besi ditambah unsur aloi, seperti tembaga, mangan, aluminium, titanium, nadir bumi dan bahan lain.
Lembaran keluli aloi mempunyai kekuatan tinggi, dan mempunyai rintangan kakisan yang baik, rintangan suhu tinggi dan rendah, rintangan haus dan sifat bukan magnet. Plat keluli aloi digunakan secara meluas dalam pengeluaran perindustrian dan pembinaan.
Proses utama plat keluli aloi ialah: plat keluli aloi tergelek panas, plat keluli aloi tergelek sejuk.
Lembaran keluli aloi juga mempunyai kebolehmesinan dan kebolehkimpalan yang baik. Penambahan unsur pengaloian boleh meningkatkan keplastikan dan kebolehmesinan keluli, menjadikannya lebih mudah untuk diproses seperti memotong, mengecap, membengkok dan mengimpal.
| ISO | гOKT | DIN | AS | JIS | UK | FR | ||
| ASTM | UNS | AISI | BS | NF | ||||
| 20Mn6 | 20г2 | 20Mn5 | G13200 | 1320 | SMn420 | 150M19 | 20M5 | |
| 28Mn6 | 30г2 | 28Mn6 | G13300 | 1330 | SMn433 | 150M28 | 32M5 | |
| 36Mn6 | 35г2 | 36Mn6 | G13350 | 1335 | SMn433 | 150M36 | 35M5 | |
| 42Mn6 | 40г2 | G13400 | 1340 | SMn438 | 40M5 | |||
| 45г2 | 46Mn7 | G13450 | 1345 | SMn443 | 45M5 | |||
| 50г2 | 50Mn7 | 55M5 | ||||||
| 17MnV6 | ||||||||
| 15X | 15Cr3 | G51150 | 5150 | SCr415 | 527A17 | 12C3 | ||
| 15XA | ||||||||
| 20Cr4 | 20X | 20Cr4 | G51200 | 5120 | SCr420 | 527A19 | 18C3 | |
| 30X | 28Cr4 | G51300 | 5130 | SCr430 | 530A30 | 28C4 | ||
| 34Cr4 | 35X | 34Cr4 | G513500 | 5135 | SCr435 | 530A36 | 38C4 | |
| 41Cr | 40X | 41Cr4 | G51400 | 5140 | SCr440 | 530A40 | 42C4 | |
| 45X | G51450 | 5145 | SCr445 | 45C4 | ||||
| 50X | G51500 | 5150 | 50C4 | |||||
| 38XC | ||||||||
| 12XM | 12CrMo44 | 12CD4 | ||||||
| 15XM | 15CrMo5 | SCM415 | 15CD4.05 | |||||
| 18CrMo4 | 20XM | 20CrMo4 | G41190 | 4119 | SCM420 | CDS12 | 18CD4 | |
| 30XM | G41300 | 4130 | SCM430 | CDS13 | 30CD4 | |||
| 34CrMo4 | 35XM | 34CrMo4 | G41350 | 4135 | SCM435 | 708A37 | 34CD4 | |
| 42CrMo4 | 38XM | 42CrMo4 | G41400 | 4140 | SCM440 | 708A40 | 42CD4 | |
| 12XMф | ||||||||
| 35XMф | 35CrMoV5 | |||||||
| 12X1Mф | 13CrMoV4·2 | |||||||
| 25X2MфA | 24CrMoV5·5 | |||||||
| 25X2M1фA | ||||||||
| 20X3MBф | 21CrVMoW12 | (SAE)6470E | SACM645 | 905M35 | 40CAD6·12 | |||
| 41CrA1Mo74 | 38XM1фA | 41CrA1Mo7 | G61200 | 6120 | ||||
| 20Xф | 21CrV4 | (SAE)6140 | ||||||
| 40XфA | 42CrV6 | |||||||
| 51CrV4 | 50XфA | 50CrV4 | G61500 | 6150 | SUP10 | 735A50 | 50CrV4 | |
| 15Xг | 16MnCr5 | 16MC5 | ||||||
| 20MnCr5 | 20Xг | 20MnCr5 | G51200 | 5120 | SMnC420 | 20MC5 | ||
| 40Xг | 5140 | SMnC443 | ||||||
| 20Xгс | ||||||||
| 25Xгс | ||||||||
| 30Xгс | ||||||||
| 30XгсA | ||||||||
| 35XгсA | ||||||||
| 25XгM | 20CrMo5 | 4119 | SCM421 | 708M40 | 42CD4 | |||
| 38XгM | SCM440 | |||||||
| 18XгT | ||||||||
| 30XгT | 30MnCrTi4 | |||||||
| 20XH | 20NiCr6 | 3120 | 637M17 | 20NC6 | ||||
| 40XH | 40NiCr6 | G31400 | 3140 | SNC236 | 640M40 | 35NC6 | ||
| 45XH | 45NiCr6 | G31450 | 3145 | |||||
| 50XH | 3150 | |||||||
| 12XH2 | 14NiCr10 | 3215 | SNC415 | 14NC11 | ||||
| 15CrNi13 | 12XH3A | 14NiCr14 | 3415 | SNC815 | 655M13 | 14NC12 | ||
| 20XH3A | 22NiCr14 | 20NC11 | ||||||
| 30XH3A | 31NiCr14 | 3435 | SNC631 | 653M31 | 30NC12 | |||
| 37XH3 | 35NiCr18 | 3335 | SNC836 | 35NC15 | ||||
| 12X2H4A | 14NiCr18 | G33106 | 3310 | 659M15 | 12NV15 | |||
| 20X2H4A | 3320 | 20NC14 | ||||||
| 20NiCrMo2 | 20XHM | 21NiCrMo2 | G86200 | 8620 | SNCM220 | 805M20 | 20NCD2 | |
| 40XHMA | 36NiCrMo4 | G43400 | 4340 | SNCM439 | 817M40 | 40NCD3 | ||
| 45XMфA | SNCM447 | |||||||
| 18X2H4BA | ||||||||
| 25X2H4BA | ||||||||
| TIDAK | China | Rusia | Amerika | Inggeris | Jepun | Perancis | Jerman |
| GB | ГОСТ | ASTM | BS | JIS | NF | DIN | |
| 1 |
30Mn2 |
30Г2 | 1330 | 150M28 | SMn433H | 32M5 | 30Mn5 |
| 2 | 35Mn2 | 35Г2 | 1335 | 150M36 | SMn438(H) | 35M5 | 36Mn5 |
| 3 | 40Mn2 | 40Г2 | 1340 | SMn443 | 40M5 | ||
| 4 | 45Mn2 | 45Г2 | 1345 | SMn443 | 46Mn7 | ||
| 5 | 50Mn2 | 50Г2 | ~55M5 | ||||
| 6 | 20MnV | 20MnV6 | |||||
| 7 | 35SiMn | 35CГ | En46 | 37MnSi5 | |||
| 8 | 42SiMn | 35CГ | En46 | 46MnSi4 | |||
| 9 | 40B | TS14B35 | |||||
| 10 | 45B | 50B46H | |||||
| 11 | 40MnB | 50B40 | |||||
| 12 | 45MnB | 50B44 | |||||
| 13 | 15Cr | 15X | 5115 | 523M15 | SCr415(H) | 12C3 | 15Cr3 |
| 14 | 20Cr | 20X | 5120 | 527A19 | SCr420H | 18C3 | 20Cr4 |
| 15 | 30Cr | 30X | 5130 | 530A30 | SCr430 | 28Cr4 | |
| 16 | 35Cr | 35X | 5132 | 530A36 | SCr430(H) | 32C4 | 34Cr4 |
| 17 | 40Cr | 40X | 5140 | 520M40 | SCr440 | 42C4 | 41Cr4 |
| 18 | 45Cr | 45X | 51,455,147 | 534A99 | SCr445 | 45C4 | |
| 19 | 38CrSi | 38XC | |||||
| 20 | 12CrMo | 12XM | 620Cr.B | 12CD4 | 13CrMo44 | ||
| 21 | 15CrMo | 15XM | A-387Cr.B | 1653 | STC42 | 12CD4 | 16CrMo44 |
| 22 | STT42 | ||||||
| 23 | STB42 | ||||||
| 24 | 20CrMo | 20XM | 41,194,118 | CDS12 | SCT42 | 18CD4 | 20CrMo44 |
| 25 | CDS110 | STT42 | |||||
| 26 | STB42 | ||||||
| 27 | 25CrMo | 4125 | En20A | 25CD4 | 25CrMo4 | ||
| 28 | 30CrMo | 30XM | 4130 | 1717COS110 | SCM420 | 30CD4 | |
| 29 | 42CrMo | 4140 | 708A42 | 42CD4 | 42CrMo4 | ||
| 30 | 708M40 | ||||||
| 31 | 35CrMo | 35XM | 4135 | 708A37 | SCM3 | 35CD4 | 34CrMo4 |
| 32 | 12CrMoV | 12XMΦ | |||||
| 33 | 12Cr1MoV | 12X1MΦ | 13CrMoV42 | ||||
| 34 | 25Cr2Mo1VA | 25X2M1ΦA | |||||
| 35 | 20CrV | 20XΦ | 6120 | 22CrV4 | |||
| 36 | 40CrV | 40XΦA | 6140 | 42CrV6 | |||
| 37 | 50CrVA | 50XΦA | 6150 | 735A30 | SUP10 | 50CV4 | 50CrV4 |
| 38 | 15CrMn | 15XГ,18XГ | |||||
| 39 | 20CrMn | 20XГCA | 5152 | 527A60 | SUP9 | ||
| 40 | 30CrMnSiA | 30XГCA | |||||
| 41 | 40CrNi | 40XH | 3140H | 640M40 | SNC236 | 40NiCr6 | |
| 42 | 20CrNi3A | 20XH3A | 3316 | 20NC11 | 20NiCr14 | ||
| 43 | 30CrNi3A | 30XH3A | 3325 | 653M31 | SNC631H | 28NiCr10 | |
| 44 | 3330 | SNC631 | |||||
| 45 | 20MnMoB | 80B20 | |||||
| 46 | 38CrMoAla | 38XMIOA | 905M39 | SACM645 | 40CAD6.12 | 41CrAlMo07 | |
| 47 | 40CrNiMoA | 40XHMA | 4340 | 871M40 | SNCM439 | 40NiCrMo22 | |
| 48 | 10Cr17 | SUS430 | 430 | S43000 | STS430 | 1.4016 | |
| 49 | SUS430F | 430F | S43020 | STS430F | 1.4104 | ||
| 50 | 430L | ||||||
| 51 | 10Cr17Mo | SUS434 | 434 | S43400 | STS434 | 1.4113 | |
| 52 | SUS436L | 436L | |||||
| 53 | 022Cr18NbTi | – | – | S43940 | – | 1.4509 | |
| 54 | 019Cr19Mo2NbTi | SUS444 | 444 | S44400 | STS444 | 1.4521 | |
| 55 | – | – | 446 | – | – | – | |
| 56 | 00Cr18Mo2Ti | – | – | – | – | – | |
| 57 | 00Cr17Ti | – | – | – | – | – | |
| 58 | 12Cr12 | SUS403 | 403 | S40300 | STS403 | – | |
| 59 | 12Cr13 | SUS410 | 410 | S41000 | STS410 | 1.4006 | |
| 60 | SUS414 | 414 | |||||
| 61 | SUS416 | 416 | 1.4005 | ||||
| 62 | 20Cr13 | SUS420J1 | 420 | S42000 | STS420J1 | 1.4021 | |
| 63 | 30Cr13 | SUS420J2 | – | – | STS420J2 | 1.4028 | |
| 64 | SUS420F | ||||||
| 65 | 68Cr17 | SUS440A | 440A | S44002 | STS440A | – | |
| 66 | SUS440B | 440B | |||||
| 67 | SUS440f | 440f | |||||
| 68 | SUS440C | 440C | |||||
| 69 | 2Cr16Ni2 | SUS431 | 431 | S43100 | – | 1.4057 | |
| 70 | SUS410J1 | 410J1 | |||||
| 71 | SUS420J1 | 429J1 | |||||
| 72 | – | – | – | – | – |