M42 High Speed Steel Round Bar 1.3247 / SKH59 HSS
| Products |
High speed steel round bar |
| Grade |
M24/1.3247/SKH59 |
| Standard |
GB standard,ASTM standard |
| Wire Gauge |
Th 3-120mm x W 3-300mm. |
| Dia tolerance |
Dia 3mm-300mm. |
| Process |
Hot rolled |
| Delivery time |
around 20 days |
| Payment terms |
L/C,D/A,D/P,T/T, |
| Supply ablitity |
10000 Metric Ton/Metric Tons per Month |
| MOQ |
20 Metric Tons |
| Application |
M42 High speed steel round bar can be used in conditions where the demand for hot hardness is important. Commonly used for cutting tools including twist drills, taps, broaches tools, milling cutters, reamers, end mills, bandsaw blades, cold work tools, and thread rolling dies. |
Inspection: Chemical Composition, Mechanical Property, Hardness testing, Ultrasonic testing, Metallographic, Dimension and Surface.
Package: Customers Specific Requirement.
Place of Origin: Jiangsu, China.
All Grades Comparison
| ASTM |
DIN |
EN |
JIS |
GB |
| M42 |
1.3247 |
HS2-9-1-8 |
SKH59 |
W2Mo9Cr4VCo8 |
Chemical Composition(%)
| Steel Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
W |
Co |
| M42 |
1.05-1.15 |
0.15-0.65 |
0.15-0.40 |
0.030 max |
0.030 max |
3.50-4.25 |
9.00-10.00 |
0.95-1.35 |
1.15-1.85 |
7.75-8.75 |
| 1.3247 |
1.05-1.15 |
0.70 max |
0.40 max |
0.030 max |
0.030 max |
3.50-4.50 |
9.00-10.00 |
0.90-1.30 |
1.20-1.90 |
7.50-8.50 |
| W2Mo9Cr4VCo8 |
1.05-1.15 |
0.15-0.65 |
0.15-0.40 |
0.030 max |
0.030 max |
3.50-4.25 |
9.00-10.00 |
0.95-1.35 |
1.15-1.85 |
7.75-8.75
|
Heat Treatment
Annealing
M42 High speed steel round bar is recommended after hot working and before rehardening. Heat the M42 high speed steel to 850°C at a rate of no more than 220°C per hour. Always hold at temperature for one hour per 25mm of thickness (with two hours being minimum). Furnace cool slowly. The M42 high speed steel round bar annealed hardness achieved should be 269 Brinell or lower.
Stress Relieving
If tools produced from M42 high speed steel round bar heavily machined or ground it is recommended to stress relieve after machining and prior to hardening to minimise the possibility of distortion. To stress relieve heat the component to 600-650°C and soak well (approximately two hours) Cool slowly in the furnace. The M42 high speed steel round bar tools can be finish machined before heat treatment.
Hardening
For best results harden in a vacuum or controlled furnace, or in a properly rectified salt bath. Pre heat thoroughly in two steps to 450-500°C, then to 820-870°C, transfer to the high temperature salt bath or furnace. The exact hardening temperature to use for M42 will depend on the type of work being treated, but in general components should be hardened from the range of 1050-1250°C.
Tempering
M42 High speed steel round bar in a vacuum or controlled furnace, or in a properly rectified salt bath. Pre-heat the steel thoroughly to 820-870°C then transfer to the high temperature salt bath or furnace. The exact hardening temperature to use for M42 high speed steel round bar will depend on the type of work being treated, but in general components should be hardened from the range of 1160-1180°C in salt, or 1180-1190°C in atmosphere or vacuum furnaces. After a short hold at the hardening temperature, quench the component without further soaking into salt at 540-595°C or warm oil. If salt quenched allow the component to equalise at the bath temperature and then complete the quench in still air.
Temperature [°C] 500 550 600
Hardness [HRc] 67 69 63
Evergrowing Resources CO.,Ltd
Evergrowing Resources Co., Limited was Located in Nanjing, China. We have engaged in import and export of all kinds of ferrous and nonferrous materials all over the world. Because we are top agent of several different steel mills in Asia and Europe, so we have ability to offer best quality products and services to our clients. Till now, we have supplied products and services in Asia, Europe, Africa, North America and South America. Following the trend of market development, we have built our special steel processing center in Jiangsu, China to do further processing on the products, such as heat treatment (QT, N, ANN), rough turned, CNC cutting and etc. We have extended our industrial train and enhanced the ability to provide the auxiliary item, and thus strengthened our market advantage.
Evergrowing aim:
Competitive price: try best to make best offer
Top quality: 100% comply with customer's standard
JIT delivery: Delivery on time for each order.
One station purchase:we try to supply the material with different condition to our customers.
After service: Response on any quality question and etc.
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M42 High Speed Steel Round Bar 1.3247 / SKH59 HSS Images
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