Shanghai Bozhong Metal Group Co., Ltd.
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Description
Alloy special structural steels.
Applications
Component parts for steam boilers and turbines, shafts for higher temperature ranges.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.85
Time-Temperature Transformation (TTT) Diagram
Designation by Standards
| Brand Name | Ravne No. | Mat. No. | DIN | EN | AISI |
| 16MNCRS5 | 779 | 1.7139 | 16MnCrS5 | - | SAE 5117 |
Chemical Composition (in weight %)
| C | Si | Mn | Cr | Mo | Ni | V | W | Others |
| 0.16 | max. 0.40 | 1.15 | 0.95 | - | - | - | - | - |
Soft Annealing
Heat to 650-700oC, cool slowly. This will produce a maximum Brinell hardness of 207.
Heat Treatment
| Treatment | Temperature | Cooling |
| Case hardening | 880-980oC | Oil (water), hot bath 160-250oC |
| Carburising | 880-980oC | Salth bath (580-680oC), case hardening box |
| Direct hardening | 880-980oC | Oil (water), hot bath 160-250oC |
| Core refining | 860-900oC | Oil (water), hot bath 160-250oC |
| Core refining | 780-820oC | Oil (water), hot bath 160-250oC |
Tempering
Tempering temperature: 150-200oC, air.
Hardness in Various Treated Conditions
Treated for stregth: 156-207 HB
Soft Annealed: 207 HB
Annealed to spherical carbides: max. 165 HB
Treated to pearlite structure: 140-187 HB
Distance From Quenched End in mm
| mm | 1.5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 |
| H max. | 47 | 46 | 44 | 41 | 39 | 37 | 35 | 33 | 31 | 30 | 29 | 28 | 27 |
| H min. | 39 | 36 | 31 | 28 | 24 | 21 | - | - | - | - | - | - | - |
| HH max. | 47 | 46 | 44 | 41 | 39 | 37 | 35 | 33 | 31 | 30 | 29 | 28 | 27 |
| HH min. | 42 | 39 | 35 | 32 | 29 | 26 | 24 | 22 | 20 | - | - | - | - |
| HL max. | 44 | 43 | 40 | 37 | 34 | 32 | 30 | 28 | 26 | 25 | 24 | 23 | 22 |
| HL min. | 39 | 36 | 31 | 28 | 24 | 21 | - | - | - | - | - | - | - |
Forging
Hot forming temperature: 1150-850oC.
Machinability
No data.
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.
