Dual Phase Steel

Docol 800DP Dual Phase Steel (DP)

Docol 800DP Dual Phase Steel (DP) DescriptionDocol 800DP:Docol 800DP dual-phase steel has good formability and can be used in the production of automotive safety components. This steel is subjected to a special heat treatment, which mainly produces a two-phase structure. Ferrite, which can i

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Docol 800DP Dual Phase Steel (DP) Description

Docol 800DP:Docol 800DP dual-phase steel has good formability and can be used in the production of automotive safety components. This steel is subjected to a special heat treatment, which mainly produces a two-phase structure. Ferrite, which can impart formability, represents one phase, while martensite, which is responsible for strength, represents the other phase. Bainite may exist as a complementary phase.

Mechanical Properties

Steel Grade	Standard	Plating	Test Direction	Yield Strength Rp0.2 (MPa)	Tensile Strength Rm (MPa)	Extension Rate A80( min%)	Minimum Bend Inner Diameter for 90 ° Bend
Docol CR 440Y780T- DP	VDA239- 100:2016	UC, GA, ZA	L	440-550	780-900	14	UC 1.0xt GI, GA, FI 1.8xt
Docol CR 450Y780T- DP	SSAB	UC	L	450-550	780-900	15	1.0xt
Docol CR 390Y800T- DL	SSAB	UC	T	350-	800-950	13	1.0xt
Docol CR 500Y800T- DP	SSAB	UC	T	500-650	800-950	10	1.0xt
Docol 800DPX	SSAB	GI, ZA	T	620-770	800-950	10	0.9xt

Chemical Composition

Steel Grade	Plating	C (max %)	Si (max %)	Mn (max %)	P (max %)	S (max %)	Al ( %)	Nb Title (max %)	Cr Mo (max%)	B (max %)	Cu (max %)
Docol CR 440Y780T- DP	UC	0.16	0.40	1.80	0.020	0.010	0.015-1.00	-	-	0.20	0.005
Docol CR 440Y780T- DP	GI,GA,ZA	0.18	0.80	2.50	0.050	0.010	0.015-1.00	0.15	1.00	0.20	0.005
Docol CR 450Y780T- DP	UC	0.16	0.40	1.80	0.020	0.010	0.015-	0.10	-	-	-
Docol CR 390Y800T- DL	UC	0.16	0.40	1.80	0.020	0.010	0.015-	0.10	-	-	-
Docol CR 500Y800T- DP	UC	0.15	0.40	1.80	0.020	0.010	0.015-	0.10	-	-	-
Docol 800DPX	GI, ZA	0.18	1.00	2.50	0.050	0.010	0.015-1.00	0.15	1.00	0.20	0.005

Plating

Plating Type	Plating Grade	Standard	Single-sided coating quality, single-point test (g/m2)	Single side thickness, for reference only(μm)
GI	40/40	VDA239-100	40-60	5.6-8.5
GI	50/50	VDA239-100	50-70	7.0-9.9
GI	60/60	VDA239-100	60-90	8.5-12.7
GI	70/70	VDA239-100	70-100	9.9-14.1
GI	85/85	VDA239-100	85-115	12.0-16.2
GI	115/115	VDA239-100	115-155	16.2-21.8
GA	40/40	VDA239-100	40-60	5.6-8.5
GA	50/50	VDA239-100	50-80	7.0-11.3
ZA	95	As required		7-
ZA	130	As required		10-

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