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


Thickness
[mm]
Max. width
[mm]
Max. length[mm]Delivery condition 
durostat 400*2.5
3.0
3.5
4.0 - 6.0
6.0 - 8.0
1,250
1,520
1,570
1,620
***
12,000direct-hardened
**6.0 ≤ 12.0
12.0 - 120.0
2,500
3,000
12,000direct-hardened
durostat 450*2.5
3.0
3.5
4.0 - 6.0
1,250
1,520
1,570
1,620
12,000direct-hardened
**6.0 ≤ 12.0
12.0 - 70.0
2,500
3,000
12,000direct-hardened
durostat 500*3.0 - 3.5
4.0 - 6.0
***
1,500
12,000direct-hardened
**8.0 ≤ 50.02,50012,000direct-hardened / hardened
durostat B2*1.8 ≤ 15.01,62012,000non-hardened
**8.0 ≤ 50.02,50018,700non-hardened
durostat B4*1,5 ≤ 12.01,62012,000non-hardened


* Cut-to-length sheets made of hot-rolled strip
** Heavy plates
*** Upon request

6
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

Tensile test
Brinell hardness
Hardness
Typical value
Hardness
guarantee value
Yield strength Rp0,2
Typical value
Tensile strength 
Rm
Typical value
Elongation [%] min.
Typical value
[HB][HB][MPa][MPa]A5
durostat 400*400360 - 4401,0001,25010
**400360 - 4401,0001,25010
durostat 450*450410 - 4901,1001,4009
**450410 - 4901,1001,4009
durostat 500*500460 - 5401,2001,550***
**500460 - 5401,2001,5508
durostat B2*--< 550< 700> 20
**2005001)40065020
durostat B4*--< 600< 800> 18


* Cut-to-length sheets made of hot-rolled strip
** Heavy plates
*** Upon request

 

Notch impact energy and edging radii

Notch impact energy
Edging radii
Notch impact energy Av [Joule]
Typical value

Test temperature of -40 °C
Edging radii Ri min. at 90° edging
Location of bending edge
 in direction of rolling
(s = sheet thickness)
longitudinaltransverselongitudinal
durostat 400*403 s4 s
**50
***
3 s4 s
durostat 450*303 s4 s
**304 s5 s
durostat 500****4 s5 s
**204 s5 s
durostat B2*---
**---
durostat B4*---


* Cut-to-length sheets made of hot-rolled strip
** Heavy plates
*** Upon request

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