List Of Materials - Body Structure

Fig 1: Body Structure Identification Materials

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

List of materials - body structure

A	Sheet steel
B	High-strength steel
C	Very-high-strength steel
D	Ultra-high-strength steel

Item

Material group

Material

Proof stress⁽¹⁾

Tensile strength⁽²⁾

Use/Characteristics

Sheet steel

D/54

120-220 N/mm²

260-350 N/mm²

Outer skin parts very malleable
Can be MIG welded
Part replacement as per Workshop Service Information

DX56

120-180 N/mm²

260-350 N/mm²

DX57

120-170 N/mm²

260-350 N/mm²

High-strength steel

HX260LAD

260-330 N/mm²

350-430 N/mm²

Reinforcement parts moderately to not very malleable
Can be MIG welded
Part replacement as per Workshop Service Information

HX340LAD

340-420 N/mm²

410-510 N/mm²

HX420LAD

420-520 N/mm²

470-590 N/mm²

Very-high-strength steel

HCT600X

340-420 N/mm²

> 690 N/mm²

Reinforcement parts not malleable
Can be MIG welded
Can be resistance spot-welded only using approved welders
Part replacement is not permitted

HCT780X

470-600 N/mm²

> 780 N/mm²

HCT980C

600-750 N/mm²

> 980 N/mm²

Ultra-high-strength steel

22MnB5

> 950 N/mm²

> 1, 400 N/mm²

Pillars and columns not malleable
MIG welding permitted only in exceptional cases
Can be resistance spot-welded only using approved welders
Part replacement is not permitted

⁽¹⁾	Proof stress (yield stress) is the amount of mechanical stress above which a material will extend or buckle irreversibly or deform plastically.

⁽²⁾	Tensile strength is the resistance of a material to a force tending to tear it apart. If the tensile force is greater than the tensile strength of a body, it will be damaged irreparably.