Retained-austenite steel (TRIP steel) | HCT690T+ZE - HCT780T+ZE

Choose your electrolytically zinc-coated Retained-austenite steel (TRIP steel) here in grades HCT690T+ZE and HCT780T+ZE.

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Multiphase steel ∙ DIN EN 10 338

Retained austenite steel (TRIP steel)

Short name	VDA239-100*	Surface finish	Material number	Tensile strength R _p0,2MPa	Tensile strength R_mMPa	Elongation at break A₈₀²⁾% min.	Solidification exponent n_n10-UEmin.	Bake hardening index BH₂⁵⁾ min.
HCT690T	CR400Y690T-TR	+ZE	1.0947	400-520	690	23	0.19	40
HCT780T	CR450Y780T-TR	+ZE	1.0948	450-570	780	21	0.16	40

_{1) XG = dual phase with increased yield strength}

_{2) Reduced minimum values of elongation at break apply to product thicknesses t < 0.60 mm (minus 2 units). * Comparative grade, therefore slight deviations from DIN EN values possible}

_{3) Elongation at break for a proportional sample with L0 = 5.65 √S0 for sheet thicknesses ≥ 3.0 mm}

Chemical composition, melt analysis

Retained austenite steel (TRIP steel)

Short name	VDA239-100*	Surface finish	Material number	Mass % max.
		C	Si	Mn	P	S	AI_{total(from/to)}	Cr+Mo	Nb+Ti	V	B
HCT690T	CR400Y690T-TR	+ZE	1.0947	0.24	2.00	2.20	0.080	0.015	0.015-2.0	0,60	0.20	0.20	0.005
HCT780T	CR450Y780T-TR	+ZE	1.0948	0.25	2.20	2.50	0.080	0.015	0.015-2.0	0.60	0.20	0.20	0.005

_{1) XG = dual phase with increased yield strength}

* Comparative grade, therefore slight deviations from DIN EN values possible