Docol 800DP Dual Phase Steel

OVERVIEW

Material properties and organizational structure of Docol 800DP dual-phase steel

Docol 800DP belongs to the category of dual-phase steel (DP). Its microstructure is mainly composed of ferrite and martensite, in which martensite is dispersed in the ferrite matrix in an island shape. This organizational structure gives the material no aging characteristics and low yield strength ratio, and at the same time has a high work hardening index and bake hardening value, so that it can further improve its strength through strain strengthening during the forming process

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-

Core performance and application areas of Docol 800DP

Key performance characteristics

Balance between high strength and formability: As an advanced high-strength steel, its tensile strength is usually not less than 780MPa (refer to the performance of DP steel in the same series), and its elongation after fracture is about 10%-14%, which is suitable for cold forming of complex structural parts.

Excellent surface quality: The cold rolling process makes its surface precision high, which can meet the scenes with high requirements for appearance such as mechanical equipment housing and electrical structure.

Processing adaptability: supports customized opening (such as 1m×2m, 1.219m×2.438m and other specifications), and can be made into special-shaped parts through deep processing such as stamping and bending.


Typical application scenarios

1. Automobile industry: widely used in front and rear bumpers, anti-collision beams and other safety structural parts, using its high impact absorption capacity to improve the passive safety performance of vehicles.

2. Machinery manufacturing: suitable for load-bearing structures of various equipment, precision electronic component housings and metal product stampings.

PRODUCT DISPLAY

CERTIFICATE

PACKING

CUSTOMER FEEDBACK

FAQ

Q:Can you send samples? 
A:Of course, we can send samples to all parts of the world, our samples are free, but customers need to bear the courier costs. 
Q:What product information do I need to provide? 
A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase. 
Q:About product prices? 
A:Prices vary from period to period due to cyclical changes in the price of raw materials. 
Q:What are the certifications for your products? 
A:We have ISO 9001, SGS, EWC and other certifications. 
Q:How long does your delivery time take? 
A:In general, our delivery time is within 7-45 days, and may be delayed if the demand is extremely large or special circumstances occur. 
Q:Can I go to your factory to visit? 
A:Of course, we welcome customers from all over the world to visit our factory. 
Q:Does the product have quality inspection before loading? 
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed. 
Q:How to pack the products? 
A:The inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion during ocean transportation. 

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