This Table provides a comprehensive overview of alloy steel grades across 11 major international standards: JIS, W.-nr., DIN, BS, EN, AFNOR, UNI, UNE, SS, AISI/SAE, and GB. By comparing alloy steel grades under these various standards, this table helps manufacturers, engineers, and material specialists easily identify equivalent materials, ensuring compatibility and consistency in global projects. Whether you’re working on automotive, construction, or industrial applications, this tool offers valuable insights into selecting the right alloy steel for your specific needs, regardless of the regional standard.
| Japan | Germany | United Kingdom | France | Italy | Spain | Sweden | United States | China | ||
|---|---|---|---|---|---|---|---|---|---|---|
| JIS | W.-nr. | DIN | BS | EN | AFNOR | UNI | UNE | SS | AISI/SAE | GB |
| SM400A, SM400B SM400C | 1.0144 | St.44.2 | 4360 43 C | – | E28-3 | – | – | 1412 | A573-81 | – |
| SM490A, SM490B SM490C | 1.0570 | St52-3 | 4360 50 B | – | E36-3 | Fe52BFN Fe52CFN | – | 2132 | – | – |
| – | 1.0841 | St52-3 | 150M19 | – | 20MC5 | Fe52 | F.431 | 2172 | 5120 | – |
| – | 1.0904 | 55Si7 | 250A53 | 45 | 55S7 | 55Si8 | 56Si7 | 2085 | 9255 | 55Si2Mn |
| – | 1.0961 | 60SiCr7 | – | – | 60SC7 | 60SiCr8 | 60SiCr8 | – | 9262 | – |
| SUJ2 | 1.3505 | 100Cr6 | 534A99 | 31 | 100C6 | 100Cr6 | F.131 | 2258 | ASTM 52100 | Gr15, 45G |
| – | 1.5415 | 15Mo3 | 1501-240 | – | 15D3 | 16Mo3KW | 16Mo3 | 2912 | ASTM A204Gr.A | – |
| – | 1.5423 | 16Mo5 | 1503-245-420 | – | – | 16Mo5 | 16Mo5 | – | 4520 | – |
| – | 1.5622 | 14Ni6 | – | – | 16N6 | 14Ni6 | 15Ni6 | – | ASTM A350LF5 | – |
| – | 1.5662 | X8Ni9 | 1501-509-510 | – | – | X10Ni9 | XBNi09 | – | ASTM A353 | – |
| SNC236 | 1.5710 | 36NiCr6 | 640A35 | 111A | 35NC6 | – | – | – | 3135 | – |
| SNC415(H) | 1.5732 | 14NiCr10 | – | – | 14NC11 | 16NiCr11 | 15NiCr11 | – | 3415 | – |
| SNC815(H) | 1.5752 | 14NiCr14 | 655M13 | 36A | 12NC15 | – | – | – | 3415, 3310 | – |
| SNCM220(H) | 1.6523 | 21NiCrMo2 | 805M20 | 362 | 20NCD2 | 20NiCrMo2 | 20NiCrMo2 | 2506 | 8620 | – |
| SNCM240 | 1.6546 | 40NiCrMo22 | 311-Type 7 | – | – | 40NiCrMo2(KB) | 40NiCrMo2 | – | 8740 | – |
| – | 1.6587 | 17CrNiMo6 | 820A16 | – | 18NCD6 | – | 14NiCrMo13 | – | – | – |
| SCr415(H) | 1.7015 | 15Cr3 | 523M15 | – | 12C3 | – | – | – | 5015 | 15Cr |
| SCr440 | 1.7045 | 42Cr4 | – | – | – | – | 42Cr4 | 2245 | 5140 | 40Cr |
| SUP9(A) | 1.7176 | 55Cr3 | 527A60 | 48 | 55C3 | – | – | – | 5155 | 20CrMn |
| SCM415(H) | 1.7262 | 15CrMo5 | – | – | 12CD4 | – | 12CrMo4 | 2216 | – | – |
| – | 1.7335 | 13CrMo4 4 | 1501-620Gr27 | – | 15CD3.5 15CD4.5 | 14CrMo45 | 14CrMo45 | – | ASTM A182 F11, F12 | – |
| – | 1.7380 | 10CrMo910 | 1501-622 Gr31, 45 | – | 12CD9 12CD10 | 12CrMo9 12CrMo10 | TU.H | 2218 | ASTM A182 F.22 | – |
| – | 1.7715 | 14MoV63 | 1503-660-440 | – | – | – | 13MoCrV6 | – | – | – |
| – | 1.8523 | 39CrMoV13 9 | 897M39 | 40C | – | 36CrMoV12 | – | – | – | – |
| – | 1.6511 | 36CrNiMo4 | 816M40 | 110 | 40NCD3 | 38NiCrMo4(KB) | 35NiCrMo4 | – | 9840 | – |
| – | 1.6582 | 34CrNiMo6 | 817M40 | 24 | 35NCD6 | 35NiCrMo6(KB) | – | 2541 | 4340 | 40CrNiMoA |
| SCr430(H) | 1.7033 | 34Cr4 | 530A32 | 18B | 32C4 | 34Cr4(KB) | 35Cr4 | – | 5132 | 35Cr |
| SCr440(H) | 1.7035 | 41Cr4 | 530M40 | 18 | 42C4 | 41Cr4 | 42Cr4 | – | 5140 | 40Cr |
| – | 1.7131 | 16MnCr5 | (527M20) | – | 16MC5 | 16MnCr5 | 16MnCr5 | 2511 | 5115 | 18CrMn |
| SCM420 SCM430 | 1.7218 | 25CrMo4 | 1717CDS110 708M20 | – | 25CD4 | 25CrMo4(KB) | 55Cr3 | 2225 | 4130 | 30CrMn |
| SCM432 SCCRM3 | 1.7220 | 34CrMo4 | 708A37 | 19B | 35CD4 | 35CrMo4 | 34CrMo4 | 2234 | 4137 4135 | 35CrMo |
| SCM 440 | 1.7223 | 41CrMo4 | 708M40 | 19A | 42CD4TS | 41CrMo4 | 42CrMo4 | 2244 | 4140 4142 | 40CrMoA |
| SCM440(H) | 1.7225 | 42CrMo4 | 708M40 | 19A | 42CD4 | 42CrMo4 | 42CrMo4 | 2244 | 4140 | 42CrMo 42CrMnMo |
| – | 1.7361 | 32CrMo12 | 722M24 | 40B | 30CD12 | 32CrMo12 | F.124.A | 2240 | – | – |
| SUP10 | 1.8159 | 50CrV4 | 735A50 | 47 | 50CV4 | 50CrV4 | 51CrV4 | 2230 | 6150 | 50CrVA |
| – | 1.8509 | 41CrAlMo7 | 905M39 | 41B | 40CAD6 40CAD2 | 41CrAlMo7 | 41CrAlMo7 | 2940 | – | – |
| – | 1.2067 | 100Cr6 | BL3 | – | Y100C6 | – | 100Cr6 | – | L3 | CrV, 9SiCr |
| SKS31 SKS2, SKS3 | 1.2419 | 105WCr6 | – | – | 105WC13 | 100WCr6 107WCr5KU | 105WCr5 | 2140 | – | CrWMo |
| SKT4 | 1.2713 | 55NiCrMoV6 | BH224/5 | – | 55NCDV7 | – | F.520.S | – | L6 | 5CrNiMo |
| – | 1.5662 | X8Ni9 | 1501-509 | – | – | X10Ni9 | XBNi09 | – | ASTM A353 | – |
| – | 1.5680 | 12Ni19 | – | – | Z18N5 | – | – | – | 2515 | – |
| – | 1.6657 | 14NiCrMo134 | 832M13 | 36C | – | 15NiCrMo13 | 14NiCrMo131 | – | – | – |
| SKD1 | 1.2080 | X210Cr12 | BD3 | – | Z200C12 | X210Cr13KU X250Cr12KU | X210Cr12 | – | D3 ASTM D3 | Cr12 |
| SKD61 | 1.2344 | X40CrMoV51 X40CrMoV51 | BH13 | – | Z40CDV5 | X35CrMoV05KU X40CrMoV51KU | X40CrMoV5 | 2242 | H13 ASTM H13 | 40CrMoV5 |
| SKD12 | 1.2363 | X100CrMoV51 | BA2 | – | Z100CDV5 | X100CrMoV51KU | X100CrMoV5 | 2260 | A2 | 100CrMoV5 |
| SKD2 | 1.2436 | X210CrW12 | – | – | – | X215CrW121KU | X210CrW12 | 2312 | – | – |
| – | 1.2542 | 45WCrV7 | BS1 | – | – | 45WCrV8KU | 45WCrSi8 | 2710 | S1 | – |
| SKD5 | 1.2581 | X30WCrV93 | BH21 | – | Z30WCV9 | X28W09KU | X30WCrV9 | – | H21 | 30WCrV9 |
| – | 1.2601 | X165CrMoV12 | – | – | – | X165CrMoW12KU | X160CrMoV12 | 2310 | – | – |
| SKS43 | 1.2833 | 100V1 | BW2 | – | Y1105V | – | – | – | W210 | V |
| SKH3 | 1.3255 | S 18-1-2-5 | BT4 | – | Z80WKCV | X78WCo1805KU | HS18-1-1-5 | – | T4 | W18Cr4VCo5 |
| SKH2 | 1.3355 | S 18-0-1 | BT1 | – | Z80WCV | X75W18KU | HS18-0-1 | – | T1 | – |
| SCMnH/1 | 1.3401 | G-X120Mn12 | Z120M12 | – | Z120M12 | XG120Mn12 | X120MN12 | – | – | – |
| SUH1 | 1.4718 | X45CrSi93 | 401S45 | 52 | Z45CS9 | X45CrSi8 | F.322 | – | HW3 | X45CrSi93 |
| SUH3 | 1.3343 | S6-5-2 | 4959BA2 | – | Z40CSD10 | 15NiCrMo13 | – | 2715 | D3 | – |
| SKH9 SKH51 | 1.3343 | S6/5/2 | BM2 | – | Z85WDCV | HS6-5-2-2 | F.5603 | 2722 | M2 | – |
| – | 1.3348 | S 2-9-2 | – | – | – | HS2-9-2 | HS2-9-2 | 2782 | M7 | – |
| SKH55 | 1.3243 | S6/5/2/5 | BM35 | – | 6-5-2-5 | HS6-5-2-5 | F.5613 | 2723 | M35 | – |
FAQ
What is Alloy Steel, and how does it differ from carbon steel?
Alloy Steel is a type of steel that contains additional elements, such as chromium, nickel, and vanadium, which enhance its mechanical properties. These elements improve the steel’s strength, hardness, toughness, and resistance to wear and corrosion. In contrast, Carbon Steel contains primarily carbon and iron, with fewer alloying elements, making it less durable and resistant to certain stresses compared to alloy steel.
How are the grades of alloy steel categorized across different standards?
Alloy steel grades are categorized based on their composition and the specific alloying elements used. Different countries and organizations have their own coding systems to represent these grades. For example, in the AISI/SAE system, alloy steel grades are identified by a four-digit number, whereas in DIN, they are typically identified by specific numbers corresponding to the alloy’s properties and composition. This table compares these codes across multiple standards, making it easier for engineers and manufacturers to select the appropriate material for their applications.
Why do I need to compare alloy steel grades across international standards?
Different countries use different systems to classify and name materials. For manufacturers working internationally or with suppliers from different regions, it’s crucial to understand how steel grades in one standard correlate with those in another. This comparison table helps ensure that you select the right alloy steel grade, regardless of which standard your project or supplier uses.
Can I substitute one alloy steel grade for another in my application?
While some alloy steel grades are interchangeable, it’s important to ensure that the properties of the substitute material meet the requirements of your specific application. For example, if a specific strength or corrosion resistance is needed, you may need to verify that the new material can handle the same stresses or environmental conditions. This table helps you find equivalent grades that offer similar properties across different standards.