HC420LA+ZE | 1.0556

Grade HC420LA+ZE belongs to the electrolytically zinc-coated sheets and has a 0.2% yield strength of around 420 MPa.

Micro-alloyed steel

Properties according to DIN EN 10 268

Steel type

Short designation	VDA239-100	Surface finish	Material number
HC420LA	CR380LA	+ZE	1.0556

Mechanical properties (transverse)

Proof stress Rp 0,2¹⁾ MPa	Tensile strength Rm MPa	Elongation at²⁾ fracture A80 % min.
420–520	470–600	17

Chemical composition (heat analysis)

Percentage by weight % max.
C	Si	Mn	P	S	AI	Ti⁶⁾	Nb⁶⁾
0.14	0.5	1.6	0.03	0.025	0.015	0.15	0.09

1) Where a yield strength is defined, the respective values shall apply to the lower yield strength (ReL)

2) For thicknesses ≤ 0.7 mm but > 0.5 mm, the minimum elongation at fracture may be 2 units lower. For thicknesses ≤ 0.5 mm, the minimum elongation at fracture may be 4 units lower.

6) Additions of vanadium and boron are also permissible. The total content of all four elements must not exceed 0.22 % .

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