Designation by Standards
| Brand Name |
Ravne No. |
Mat. No. |
DIN |
EN |
AISI |
| PK335 |
335 |
1.4122 |
X39CrMo17-1 |
- |
- |
Chemical Composition (in weight %)
| C |
Si |
Mn |
Cr |
Mo |
Ni |
V |
W |
Others |
| 0.39 |
max. 1.00 |
max. 1.00 |
16.50 |
1.05 |
max. 1.00 |
- |
- |
- |
Description
Stainless steel with very good wear, corrosion reistance and industrial polishability.
Applications
PK335 is used for pump shafts, fitting and compressor parts, as well as steam and water control valves and boat shafts for use in fresh water.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [10
3 x N/mm
2]: 223
Density [g/cm
3]: 7.71
Thermal conductivity [W/m.K]: 15
Electric resistivity [Ohm mm
2/m]: 0.80
Specific heat capacity[J/g.K]: 0.43
Coefficient of Linear Thermal Expansion 10-6 oC-1
| 20-100oC |
20-200oC |
20-300oC |
20-400oC |
20-500oC |
20-600oC |
20-700oC |
20-800oC |
| 10.7 |
11.7 |
11.7 |
11.7 |
11.8 |
11.9 |
12.4 |
12.9 |
Modulus of Elasticity [103 N/mm2]
| 100oC |
200oC |
400oC |
| 223 |
205 |
190 |
Thermal conductivity [W/m.K]
| 20-200oC |
20-200oC |
20-400oC |
| 10.4 |
10.8 |
11.6 |
Continuous Cooling Transformation (CCT) Diagram
Click the image to enlarge the diagram.
Time-Temperature Transformation (TTT) Diagram
Click the image to enlarge the diagram.
Soft Annealing
Heat to 750-880
oC, cool slowly in furnace or air. Structure is ferrite with spherical carbides. This will produce a maximum Brinell hardness of 250.
Hardening
Harden from a temperature of 980-1050
oC followed by oil quenching.
Hardness after quenching is 49 HRC.
Tempering
Tempering temperature: 150-200
oC, 650-750
oC
Mechanical Properties at Room Temperature
| Size range mm |
Heat treatment condition |
0.2 % proof stress (N/mm2) |
Tensile strength (N/mm2) |
Elongation (%) |
Notch impact energy (ISO-V) (J) |
| d<=60 |
Q+T 750 |
500 |
750-950 |
12 (Long) |
20 (Long) |
| 61<d<=160 |
Q+T 750 |
500 |
750-950 |
12 (Long) |
14 (Long) |
0.2 % Proof Stress (N/mm2) at Elevated Temperatures
| 100oC |
150oC |
200oC |
250oC |
300oC |
350oC |
400oC |
| 540 |
535 |
530 |
520 |
510 |
490 |
470 |
Tempering Diagram
Click the image to enlarge the diagram.
Forging
Hot forming temperature: 1100-800
oC, slow cooling.
Machinability
Metal-cutting machining is the same as for special engineering steel
grades of corresponding strength.
Welding
Limited weldability using the manual arc and TIG welding processes, as hardening occurs in the heat-affected zone. Preheat to between 300 and 400
oC. Filler metals: 1740, Nicro82.
Forms manufactured: Please see the
Dimensional Sales Program.
Disclaimer
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.
Unless otherwise specified, registered trademarks are property of Metal Ravne company. Copyright 2011 by Metal Ravne. All rights reserved.
Contact our
Sales Office for more information.
