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DD31X | 1.0931 Material Datasheet

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Material Description

Material Number Material Name Material Number (single) Standard Standard Status Country VDA 231-106 classification
1.0931 (Stahl-Eisen-Liste : 2003) DD31X 1.0931 Stahl-Eisen-Liste : 2003 Replaced Germany 1.1.1 1)
1) Remark: The steel DD31X is a hot-rolled flat product (strip, sheet and bars) of thicknesses ≤ 6 mm with a multiphase structure mainly consisting of ferrite (up to 90%), martensite (up to 20%) and it has a bainite and retained austenite content. Usually, the delivery condition is the not descaled rolled condition. Deviations have to be negotiated at the time of ordering. The steel has a good formability, a good weldability without pre-heating and is also suitable for the application of surface coatings. Upon placing the order, special requirements should be pointed out. The dual phase steel offers special advantages regarding weight saving production of cold formed components in the automotive engineering like wheels, chassis parts, body reinforcements, bumper, profiles etc. because of the good dynamic behaviour the steel is applicated for dynamic loaded parts. The high hardening ability leads to a strong increase of the component yield strength. The rod diameter for folding amounts to 0xthickness for an bending angle of 180°. After a bake-hardening at 170°C (20 min.) BH2-values of > 30 MPa will be reached.

Chemical Composition

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

REACh RoHS
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Mechanical Properties

Semi-finished Product Condition Temperature [°C] Specimen Direction Tensile Strength [MPa] Yield Strength (0.2% offset) [MPa] Elongation A [%] Elongation A80 [%]
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Cross Reference

Material Name Country
HDT530X Germany

Producer/Supplier/Trade names

Tradename Supplier
DP 550 Salzgitter Flachstahl GmbH, Salzgitter
DP-W 550 ThyssenKrupp Steel Europe AG, Duisburg

Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Linear-elastic

Temperature [°C] Young's modulus [GPa] Bulk modulus [GPa] Shear modulus [GPa] Poisson's ratio
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Alternating stress

Temperature [°C] Stress ratio Mean stress [MPa] Alternating stress [MPa] Cycles
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Designation

Designation Material number Source
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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