Material number
The material number of a material is a way of clearly designating a technical material .
According to European standards, the material number of a steel always starts with 1 . that of heavy metals (except iron) with 2 . that of light metals with 3 . , each followed by four digits. Steel material numbers are assigned by the steel institute VDEh .
According to European standards, the material number of an aluminum alloy always begins with EN AW followed by four digits for a wrought alloy or EN AC followed by five digits for a cast alloy .
Steel and Iron
see also: steel grade, section material numbers
Material numbers are shown in the following format: 1.2345 (67) . According to the currently valid standard EN 10027-2: 1992-09, the number ( 45 ) can be increased to up to four digits if the increase in the number of steel types makes it necessary.
According to the withdrawn DIN standard DIN 17007-2: 1961-09, points 6 were also standardized as the steelmaking process and 7 as the treatment status, but this was mostly omitted.
The meaning of the positions in a material number is listed below:
| meaning | |
|---|---|
| 1. 2345 (67) | Main material group |
| 1. 23 45 (67) | Grade number (steel group) |
| 1.23 45 (67) | Counting number |
| 1.2345 ( 67 ) | extended count number |
Main material groups
| Digit | Main material group |
|---|---|
| 0 | Cast iron materials, pig iron types, ferro alloys |
| 1 | Group of steels |
| 2 | Non-ferrous heavy metals |
| 3 | Non-ferrous light metals |
| 4th | Powder metals, sintered materials |
| 5… 8 | Non-metallic materials |
| 9 | reserved (for internal use) |
Main group 0 (raw and cast iron)
| Main group 0 (raw and cast iron) | |
|---|---|
| Variety number | Variety class |
| 00… 19 | Pig iron |
| 20… 49 | Master alloy, special pig iron |
| 60 ... 69 | Cast iron, lamellar graphite |
| 70… 79 | Cast iron, nodular graphite |
| 80 ... 89 | Malleable cast iron |
| 90 ... 99 | Special cast iron |
Main group 1 (steel)
| Main group 1 (steel) | ||
|---|---|---|
| Grade number (steel group) | Steel grade | |
| 00, 90 | steel | Basic steel |
| 01, 91 | General structural steel with R m <500 N mm −2 | Unalloyed quality steel |
| 02, 92 | Other structural steel; not suitable for heat treatment; with R m <500 N mm −2 | |
| 03, 93 | Steel with C content = <0.12% or R m <400 N mm −2 | |
| 04, 94 | Steel with C content = 0.12 ... 0.25% or R m = 400 ... 500 N mm −2 | |
| 05, 95 | Steel with C content = 0.25… 0.55% or R m = 500… 700 N mm −2 | |
| 06, 96 | Steel with a C content ≥ 0.55% or R m ≥ 700 N mm −2 | |
| 07, 97 | Steel with a higher P or S content | |
| 10 | Steel with special physical properties | Unalloyed stainless steel |
| 11 | Construction, mechanical engineering, container steel with C content <0.5% | |
| 12 | Mechanical engineering steel with C content ≥ 0.5% | |
| 13 | Construction, mechanical engineering, container steel with special requirements | |
| 15 ... 18 | Container steel | |
| 08, 98 | Steel with special physical properties | Alloyed quality steel |
| 09.99 | Steel for various uses | |
| 20 ... 28 | Tool steel | Alloy stainless steel |
| 32, 33 | High speed steel | |
| 35 | Roller bearing steel | |
| 36 | Steel with special magnetic properties | |
| 37 | Steel with special magnetic properties; alloyed with Co | |
| 38 | Steel with special physical properties | |
| 39 | Steel with special physical properties; alloyed with Ni | |
| 40 | Stainless steel with <2.5% Ni | |
| 41 | Stainless steel with <2.5% Ni; with Mon | |
| 43 | Stainless steel with ≥ 2.5% Ni | |
| 44 | Stainless steel with ≥ 2.5% Ni; with Mon | |
| 45 | Stainless steel with special additives | |
| 46 | Chemically resistant and highly heat-resistant Ni alloy | |
| 47 | Heat-resistant steel | |
| 48 | Heat-resistant steel with ≥ 2.5% Ni | |
| 49 | highly heat-resistant material | |
| 85 | Nitriding steel | |
| 87 ... 89 | Construction, mechanical engineering, container steel; high strength and suitable for welding | |
| 50… 84, 86 | Structural, mechanical and container steel classified according to alloy elements | |
example
Material number 1.0144
- Steel (number 1)
- general structural steel (R m <500 N.mm −2 ) (numbers 2 and 3)
- Short name: S275J2 + N (digits 1 to 5)
1.0144 is used for machine parts, structural steelwork, crane construction, axles and shafts. Instead of the material numbers, the so-called short names can also be used for steel : Steel types .
Non-ferrous metals
Format for material numbers
Material numbers of non-ferrous metals are shown in the following format: 1.2345.67
| meaning | |
|---|---|
| 1. 2345.67 | Main material group ( 1 = steels), 2 = heavy metals, 3 = light metals |
| 1. 2345 .67 | Variety numbers |
| 1.2345. 67 | Attachment mark |
Format for material symbols
Material abbreviations are shown in the following format: 12-3456 78
| meaning | |
|---|---|
| 12 -3456 78 | Manufacture, use |
| 12- 345 6 78 | composition |
| 12-345 6 7 8 | Special properties |
Aluminum and aluminum alloys
EN AW-1234 X
| Digit | meaning |
|---|---|
| EN | Euronorm |
| A. | aluminum |
| W. | Product form, W for wrought alloy, C for cast alloy |
| 1 | Main alloy element |
| 2 | Alloy modification |
| 3, 4 | Designation of various alloys in the series, irrelevant to the user |
| X | Identification of national variants |
Wrought aluminum alloys are usually designated with a four-digit number system created by the Aluminum Association instead of their material number, see aluminum alloy .
according to EN 573-1: 2005-02
Sintered metals
Sint-AA 1 2
| Digit | meaning |
|---|---|
| AA | Code letters for space filling R X |
| 1 | Code number for the chemical composition |
| 2 | Counting digit |
Space filling
| character | R X [%] | use | properties |
|---|---|---|---|
| AF | <73 | Filters for gases and liquids | heat resistant |
| A. | 75 ± 2.5 | bearings | good emergency running properties |
| B. | 80 ± 2.5 | bearings | oil-soaked; excellent emergency running properties |
| C. | 85 ± 2.5 | Plain bearings, molded parts, machine parts | |
| D. | 90 ± 2.5 | Molded parts, friction materials | weldable and hardenable |
| E. | 98 ± 2.5 | Molded parts, office machine parts, relay parts, pole pieces | |
| F. | > 95.5 | Molded parts, gears, couplings | hot pressed; wear-resistant and durable |
| G | > 92 | Molded parts, pump parts | infiltrated; oil and waterproof |
| S. | > 90 | Plain bearings, sliding elements | hot pressed |
Chemical composition
| Digit | meaning |
|---|---|
| 0 | Sintered iron, sintered steel, unalloyed (0… 1%) |
| 1 | Sintered steel, 1… 5% Cu , with or without C |
| 2 | Sintered steel; > 5% Cu; with or without C |
| 3 | Sintered steel; with or without C or Cu; other alloy elements <6% |
| 4th | Sintered steel; with or without C or Cu; other alloy elements> 6% |
| 5 | Sintered alloy with more than 60% Cu |
| 6th | Sintered alloy made from other non-ferrous metals |
| 7th | Sintered light metal |
| 8, 9 | reserved |
Short names
| Surname | Strength R m [N mm −2 ] |
composition |
|---|---|---|
| Sint-AF40 | 10… 150 | Sintered steel ( Cr Ni ) sintered Cu Sn ( bronze ) sintered polyethylene |
| Sint-AF50 | 10 ... 80 | |
| Sint-AF90 | 0.2 | |
| Sint-A00 | > 60 | Sintered iron Sintered iron , soft magnetic |
| Sint-B00 | > 80 | |
| Sint-D02 | > 190 | |
| Sint-B10 | > 150 | Sintered steel, containing copper |
| Sint-E10 | > 350 | |
| Sint-A11 | > 200 | Sintered steel, containing carbon and copper, with MoS 2 |
| Sint-B11 | > 250 | |
| Sint-D11 | > 500 | |
| Sint-S11 | > 45 | |
| Sint-B21 | > 250 | Sintered steel, containing carbon, over 5% Cu Sintered steel, Cu infiltrated |
| Sint-C21 | > 350 | |
| Sint-G22 | > 75 | |
| Sint-C30 | > 260 | Sintered steel, containing Cu and Ni |
| Sint-D30 | > 550 | |
| Sint-A34 | > 120 | Sintered steel with Cu and Sn sintered steel, containing phosphorus |
| Sint-B34 | > 170 | |
| Sint-C35 | > 230 | |
| Sint-D35 | > 300 | |
| Sint-S41 | > 85 | Sintered steel with C, Cu, Ni Sinter-CuSn Sinter-CuSn, containing graphite |
| Sint-A50 | > 70 | |
| Sint-D50 | > 220 | |
| Sint-S51 | > 40 | |
| Sint-C82 | > 90 | Sinter-CuZn ( brass ) Sinter-CuSn, containing C and Pb Sinter-CuNiZn Sinter-CuNiFe, containing graphite |
| Sint-D52 | > 100 | |
| Sint-S53 | > 45 | |
| Sint-C54 | > 100 | |
| Sint-S61 | > 80 | |
| Sint-D71 | > 90 | Sintered aluminum (AlMgCu or AlCuMg) |
| Sint-E71 | > 100 | |
| Sint-D73 | > 120 | |
| Sint-E73 | > 140 |
Thermoplastic molding compounds
AA-B CDDDDDDD 11-E222 GH33
| Digit | meaning |
|---|---|
| AA | Abbreviation for main polymer (e.g. PP = polypropylene ) |
| -B | Identification letters for special properties. |
| C. | Intended processing methods. |
| DDDDDDD | Qualitative characteristics (additives and coloring). |
| 11-E222 | Contains information on strength and melt index. |
| G | Material of the added additive. |
| H | Shape or structure of the added additive. |
| 33 | Mass fraction in% of the added additive. |
see also: ISO 1872
Web links
- Meaning of the attachment numbers , Metallograf.de