UK Special Steel Stockholder
This is a text only version of West Yorkshire Steel's Website.
Click here for the normal web pages
1.2083
Technical Data
1.2083 is a chromium alloyed stainless plastic mould steel, which is characterised by good polishability, good hardenability giving high hardness, with fair corrosion resistance.
TYPICAL ANALYSIS
C.
Si.
Mn.
Cr.
0.38%
0.75%
0.50%
13.50%
Forging:
Heat slowly and uniformly to 1000°C. After forging cool slowly.
Annealing:
Heat slowly to 780°C. Slowly cool in furnace.
Hardening:
Pre heat to 600-700°C until heated through. (Austenitizing temperature 1025°C.) Continue heating to the final hardening temperature of 980-1050°C and allow the component to be heated through. Protect against decarburisation by using neutral salt bath, controlled atmosphere furnace or vacuum. Air cool or quench in oil.
Tempering:
Heat uniformly and thoroughly at the selected tempering temperatures and hold at heat for one hour per inch of total thickness. Double tempering is recommended.
Tempering °C
100
200
300
400
500
600
HRc
56
54
52
54
53
34
Nitriding:
Nitriding of 1.2083 gives it a hard surface which is
very resistant to wear and corrosion. Howe
ver , the nitrided surface reduces the corrosion resistance. Surface hardness after nitriding at 525°C in ammonia gas will be approximately 1000HV.
Temperature
Time
Approximate Depth of Case
525°C
20 hours
0.20mm
525°C
30 hours
0.30mm
525°C
60 hours
0.40mm
Welding:
Due to the high risk of crack formation welding of 1.2083 stainless steel should be avoided, if possible. When, howe
ver welding is essential, the following serves as a guide:
A. Welding of soft annealed 1.2083 stainless steel.
· Preheat to 300 - 500°C
· Weld at 300-500°C
· Immediately stress relieve
B. Repair welding of 1.2083 stainless steel in hardened and tempered condition.
· Preheat to the tempering temperature (min. 200°C) previously used.
· Start welding at tempering temperature
· Re heat immediately to tempering temperature, but max. 300°C. Soaking time 3 hours.
· Cool in air to approximately 80°C.
· Re heat immediately to tempering temperature, but max. 300°C. Soaking time 3 hours.
Electrode: Hard facing electrode.
Physical Properties:
Temperature
(50 HRc)
20°C
200°C
400°C
Density
kg/m³
7.8
7.75
7.70
Coefficient of thermal expansion
per °C
-
11.0 x 10-6
11.4 x 10-6
from 20°
Thermal conductivity
cal/cm.s °C
54.9 x 10-3
57.3 x 10-3
59.7 x 10-3
Modulus of elasticity
Kp/mm²
21 900
21 400
19 400
N/mm²
215 000
210 000
190 000
Specific Heat
cal/g °C
0.110
Tensile Strength
kp/mm²
180
168
158
N/mm²
1 780
1 650
1 550
Yield Point
kp/mm²
150
139
129
N/mm²
1 460
1 360
1 250
Reduction of Area
%
30
40
40
Elongation
%
10
12
12