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Property Class 12.9 Material Datasheet

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Material Description

Material Number Material Name Standard Scope Standard Status Country Predecessor VDA 231-106 classification
12.9 (VDA 235-204 : 2021-11) Property Class 12.9 VDA 235-204 : 2021-11 Supersedes VDA 235-204 : 2013-11 Valid Germany Property Class 12.9 1.1.1 1)
1) Remark: High-strength fasteners made of carbon steel and alloyed steel according to DIN EN ISO 898-1 with additional deviating or supplementary properties that are used in the automotive industry.

Chemical Composition

Al [%] B [%] C [%] Mn [%] P [%] S [%] Si [%] Remainder
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Material Compliance

REACh RoHS
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Mechanical Properties

Condition Temperature [°C] Tensile Strength [MPa] Yield Strength (0.2% offset) [MPa] Elongation A [%] Reduction of Area [%] Hardness HB | HBW Hardness HRC Hardness HV Case Hardness HV
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Heat Treatment

Heat Treatment Temperature [°C]
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Cross Reference

Material Name Country Standard
12K Germany DIN 267-3
12.9 Europe DIN EN ISO 898-1
12.9 Europe EN ISO 898-1
12.9 Europe ISO 898-1

Producer/Supplier/Trade names

Tradename Supplier
12.9 Bossard Deutschland GmbH, Illerrieden
12.9 Johann Maier GmbH & Co. KG, Stuttgart
12.9 KAMAX Automotive GmbH, Homberg (Ohm)
12.9 Nedschroef Fasteners B.V, Helmond
12.9 Korrodin GmbH & Co. KG, Nürnberg