Highest product quality and best processing properties

Depending on customer requirements, durostat® steel grades are supplied in direct-hardened or non-hardened condition. Both heavy plates and steel strips are accelerated-cooled directly after hot rolling. The desired hardness is adjusted to 400, 450 or 500 HB.

 

Dimensions and as-delivered condition

Sheet made of hot-rolled steel strip 

Maximum width per thickness, minimum width 900 mm

durostat® 

Thickness
[mm]

Max. width
[mm]

Max. length
[mm]
Delivery 
condition 
4002,0
2,5
3,0
3,5
4,0 - 6,0
6,0 - 8,0
1.300
1.400
1.520
1.570
1.620
1.550
12.000direct-hardened
4502,5
3,0
3,5
4,0 - 6,0
6,0 - 8,0
upon request
1.520
1.570
1.620
1.450
12.000direct-hardened
5003,0
3,5
4,0 - 6,0
8,0
1.450
1.550
1.600
upon request
12.000direct-hardened
B21,8 - 4,0
4,0 - 16,0
upon request
1.650
12.000non-hardened
B41,8 - 4,0
4,0 - 12,0
upon request
1.620
12.000non-hardened

 

 

Heavy plate

Maximum width per thickness; minimum width 1,500 mm; for 5 mm plate thickness, minimum width 2,000 mm applies.

durostat® Thickness 
[mm]
Max. width 
[mm]
Max. length 
[mm]
Delivery 
condition
4005 ≤ 12
> 12 ≤ 120
2.500
3.000
12.000 (8.000 for 5 mm thickness and ≥ 2.000 mm width)
direct-hardened
4505 ≤ 12
> 12 ≤ 70
2.500
3.000
direct-hardened
5008 ≤ 50
2.500

conventionally hardened or direct-hardened

B28 ≤ 50
2.50018.700non-hardend

The unit weight is max. 16 t.
Other dimensions on request.

 
Lieferspektrum Hinweis
durostat 400 and durostat 450 are wear-resistant, direct-hardened carbon steels. As a heavy plate, durostat 500 is a conventionally hardened steel. As a hot-rolled strip, it is a directly hardened plain carbon steel. durostat B2 and durostat B4 are supplied in non-hardened condition and are intended for heat treatment after being processed at the customer.

 

Tensile test, Brinell hardness

Sheet made of hot-rolled steel strip



Typical values

durostat® 

Hardness 1)
[HB]

Hardness
[HB]

Yield strength Rp0,2 [MPa] 

Tensile strength Rm [MPa]

Elongation A5 [%]

400360 - 440
4001.1001.25010
450410 - 4904501.2001.4009
500460 - 5405001.3001.5508
B2-500 1)< 550< 700> 20
B4-600 2)< 600< 800> 18

1) Hardness measurements are conducted pursuant to EN ISO 6506. Test condition HBW2.5 | 187.5 is applied to sheet thickness ≤ 3 mm.
2) Delivery condition unhardened, achievable hardness after quenching in water.

 

Heavy plate



Typical values 1)

durostat® Hardness
[HB]
Hardness
[HB]

Yield strength Rp0,2 [MPa] 

Tensile strength Rm [MPa]

Elongation A5 [%]

400360 - 440
4001.0001.25010
400 toughcore360 - 4404001.0001.25010
450410 - 4904501.1001.4009
450 toughcore410 - 4904501.1001.4009
500460 - 5405001.2001.5508
B2ca. 500 2)20040065020

1) Typical values for sheet thickness 20 mm
2) Delivery condition unhardened, achievable hardness after quenching in water

 

 

Notch impact energy and edging radii

Sheet made of hot-rolled steel strip

durostat® 

Typical values 
notched bar impact energy 1) A 
[Joule]

Bending radii Ri min. 2) 3)

Position of the bending edge to the rolling direction

Test temperature 
- 20 °C

Test temperature
-40 °C

acrosslengthwise
400
70503 x sheet thickness
4 x sheet thickness
450
60403 x sheet thickness
4 x sheet thickness
50040304 x sheet thickness
5 x sheet thickness
B2----

1) Typical values (ISO-V, lengthwise) related to full specimens (10 x 10 mm).
2) Smallest recommended inner radius with 90° bending, Ri min.
3) It must be taken into account that the quality of the cut edge has a significant influence on the achievable bending radii.

 

Heavy plate

durostat®

Sheet thickness 
[mm]

Notched bar impact work1) A[Joule] min. 
-40 °C

Bending radii Ri min. with 90° bending (s = sheet thickness) Position of bending edge to rolling direction 



across
lengthwise
Guarantee values 
4005 - 5027--
400 toughcore20 - 9040--
4505 - 5020--
450 toughcore20 - 4027--
5008 - 50upon request--
B2----
Indicative values 2)
400-504 s3 s
400 toughcore20 - 45804 s3 s
> 45 - 9060
450-305 s4 s
450 toughcore20 - 40505 s4 s
500-205 s4 s
B2----

1) The mean value from the three test results must meet the specified requirements. No individual value may be below 70 % of the minimum mean value. For thicknesses < 12 mm, undersize specimens with dimensions 10 x 7.5 mm or 10 x 5 mm are tested. The guarantee value is reduced proportionally to the sample cross-section. 

 

 
Lieferspektrum jetzt neu
New and improved! durostat 500 is is now available as cut-to-length sheets made of hot-rolled steel strip. - Read more