Buderus Edelstahl GmbH

l Buderus Corrosion-Resistant Plastic Mould Steel
2085 MOD
C
Si
Mn
P
S
Cr
Ni
Mo
others
Typical analysis
0.28
0.30
0.95
0.030
0.050
14.2
~ 0.50
1.10
+
Chemical composition
as per SEL
0.28–
0.38
1.00
1.40
0.030
0.050–
0.100
15.0–
17.0
1.00
/
X 33 CrS 16
DIN EN ISO 4957
~ Z 33 CS 16
AISI
~ 422 + S
Characteristics
Corrosion-resistant, sulphur-alloyed plastic mould steel with modified chemical composition and
increased hardness in comparison to 1.2085 Standard.
Applications
Mould frames and mould fittings for corrosion-resistant injection-moulding dies.
Not suitable for contouring mould parts.
Note: Because of its controlled sulphur content (economic to machine) and the high hardness level, this
material has low toughness properties.
Delivered condition
Quenched and tempered to 340–385 HB ( approx. 1150–1300 MPa)*
Physical properties (reference values)
Thermal expansion
coefficient (10–6/K)
20–100 °C
10.0
20–250 °C
12.0
20–500 °C
13.2
Thermal conductivity
(W/mK)
20 °C
23.0
250 °C
24.0
500 °C
25.0
Young’s modulus
(GPa)
20 °C
215
250 °C
203
500 °C
180
* Surface hardness in Brinell, converted to DIN EN ISO 18265, Table A.1
Buderus Edelstahl GmbH l Steel Bar Sales l Buderusstraße 25 l D-35576 Wetzlar
Telephone +49 (0) 64 41-374 2468 l Fax +49 (0) 64 41-374 2784 l [email protected] l www.buderus-steel.com
Buderus Corrosion-Resistant Plastic Mould Steel 2085 MOD
Figures in % by mass
Register of European
Steels (SEL)
Heat treatment
Stress relieving
Temperature:
Duration:
Cooling:
Approx. 500 °C in the quenched and tempered state
1 hour per 50 mm wall thickness
Furnace
Soft annealing
Temperature:
Duration:
Cooling:
820 °C
1 hour per 25 mm wall thickness
Furnace
Hardening
Temperature:
Duration:
1030 °C
1 minute per mm wall thickness
Quenching hardness
Max. 53 HRC
in oil or vacuum
Tempering
Temperature:
Duration:
Cooling:
See tempering curve
1 hour per 25 mm wall thickness
Air
Working hardness
~ 340–385 HB
Effect of the tempering temperature
on corrosion resistance
Tempering curve
1,2
Average values on samples dia. 25 x 50 mm long
hardened at 1030 °C in oil
HB converted from HRC
% mass loss
(in 10% HCL solution/20 °C/25 hours)
Hardness in HRC
60
58
56
54
52
50
48
46
44
42
40
38
36
34
32
30
28
HB
(461)
436
413
392
373
354
337
319
303
286
0
100
200
300
400
500
600
Austenitising temperature: 1030 °C
1000
Ac1e
Temperature in °C
900
800
Ac1b
F+P
700
A+C
600
500
400
300
200
Ms
M
100
0
620
1
Seconds
10
10 2
1
Minutes
627
10 3
10
Time
0,6
0,4
0
100
200
300
400
500
Tempering temperature in °C
TTT curve (continuous)
1100
0,8
0,2
700
Tempering temperature in °C
1200
1,0
530
468
10 4
100
199
182
10 5
1000
10 6
10 000
600
700
Legal notice. Buderus Edelstahl GmbH has taken every possible care in compiling this information; the data is nevertheless subject to intervening changes. Buderus Edelstahl GmbH disclaims all liability and any warranty as regards the accuracy, currency,
correctness and completeness of the information provided. The information provided is merely descriptive and indicative in nature, and binding only when expressly agreed as undertakings in a contract made with Buderus Edelstahl GmbH. Buderus Edelstahl
GmbH moreover reserves the right to make changes at any time without prior notice. Buderus Edelstahl GmbH disclaims all liability for loss or damage of any kind, including consequential loss, arising in connection with use of the information provided.
This publication supersedes all previous ones.
© Buderus Edelstahl GmbH, Wetzlar, 06/2012
l 2085 MOD