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Maryland Metrics: Materials - Miscellaneous Steel Grades
Hot Working Steels  
Material Number Abbreviation AISI / UNS - Designation**
1.2343 X 38 CrMoV 5-1 H 11 / T 20811
1.2344 X 40 CrMoV 5-1 H 13 / T 20813
1.2365 X 32 CrMoV 3-3 H 10 / T 20810
1.2367 X 38 CrMoV 5-3  
1.2581 X 30 WCrV 9-3 H 21 / T 20821
1.2678 X 45 CoCrWV 5-5-5 H 19 /
1.2714 56 NiCrMoV 7 L 6 / T 61206
1.2779 X 6 NiCrTi 26-15 660 / S 66286 (Alloy A 286)
Cold Working Steels  
Material Number Abbreviation AISI / UNS - Designation**
1.2363 X 100 CrMoV 5-1 A 2 / T 30102
1.2379 X 155 Cr V Mo 12-1 D 2 / T 30402
1.2436 X 210 CrW 12 D 6 /
1.2767 X 45 NiCrMo 4  
Stainless Martensitic Steels  
Material Number Abbreviation AISI / UNS - Designation**
1.4313 X 3 CrNiMo 13-4 F6NM / S 41500
1.4320 X 2 CrNiMo 13-4 F3NM / S 42400
1.4418 X 4 CrNiMo 16-5-1 - / -
1.4542 X 5 CrNiCuNb 16-4 630 / S 17400
1.4545 X 5 CrNiCuNb 15-5-4 XM 12 / S 15500
Stainless Ferritic / Austenitic (Duplex) Steels  
Material Number Abbreviation AISI / UNS - Designation**
1.4462 X 2 CrNiMoN 22-5-3 F51 / S 31803
1.4501 X 2 CrNiMoCuWN 25-7-4 F55 / S 32760 Superduplex
1.4507 X 2 CrNiMoCuN 15-6-3     / S 32550
Stainless Austenitic Steels  
Material Number Abbreviation AISI / UNS - Designation**
1.4429 X 2 CrNiMoN 17-13-3 F316 LN / S 31653
1.4439 X 2 CrNiMoN 17-13-5 F48 / S 31726
1.4465 X 1 CrNiMoN 25-25-2 /S 31050
1.4529 X 1 NiCrMoCuN 25-20-7 / N 08925 Superaustenit
1.4539 X 1 NiCrMoCu 25-20-5 / N 08904
1.4547 X 1 CrNiMoCuN 20-18-7 F44 / S 31254 Superaustenit
1.4565 X 2 CrNiMnMoNbN 25-18-5-4 F49 / S 34565 Superaustenit
CO-Based Alloys  
Material Number Abbreviation AISI / UNS - Designation**
- (SL 22) CoCr 26 W (CR 30006) (Stellit 6)
2.4979 CoCr 28 MoNi (Stellit HS 21)
Steels which can not be magnetised  
Material Number Abbreviation AISI / UNS - Designation**
1.3952 X 2 CrNiMoN 18-14-3 (F 316 LN)/(S 31653)
1.3964 X 2 CrNiMnMoNNb 21-16-5-3 (XM 19)
1.3974 X 2 CrNiMnMoNNb 23-17-6-3 (XM 19)
High Temperature Austenitic Steels  
Material Number Abbreviation AISI / UNS - Designation**
1.4980 X 5 NiCrTi 26-15 660 / S 66286 (Alloy A 286)
Heat Resistant Austenitic Steels  
Material Number Abbreviation AISI / UNS - Designation**
1.4845 X 12 CrNi 25-21 310 / S 31000
1.4876 X 10 CrNiAlTi 32-20 (Alloy 800) [not a UNS grade]
High Speed Steels  
Material Number Abbreviation AISI / UNS - Designation**
1.3207 S 10-4-3-10 T 42 /
1.3243 S 6-5-2-5 M 41 / T 11341
1.3247 S 2-10-1-8 M 42 / T 11342
1.3342 SC 6-5-2 (M 2) / (T 11302)
1.3343 S 6-5-2 M2 / T 11302
Note: Material Number = DIN (German industrial standard) werknorm number
AISI / UNS - Designation** = May also include manufacturers designation


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