General Information for Steel A105
| Material Group |
P - Steel |
| Sub-Grou |
Low Carbon Steel |
| Hardness |
187.0 HB |
| Tensile Strengt |
600[N/mm^2] |
| Machinability |
66% |
MACHINABILITY OF A105 STEEL
Steel A105 is a popular low-alloy forging steel with a carbon content of 0.4% and an additional 1.6% of different alloying elements in small amounts (See details in the table below). Steel A105 has a machinability rating of 66%. In many publications, it is also refed to as Carbon Steel, since the alloying elements are in very small quantities. It is mainly used as forging steel for pipe parts such as flanges, fittings, nozzles.
It is relatively easy to machine compared with average low-alloy steels. A good starting point would be a cutting speed of 800-1100 SFM (245-335 m/min) for turning, and 510-670 SFM (155-205 m/min) for milling.
SUMMARY:
For turning operations on Steel A105, it is best to use inserts with thick CVD coating and medium hardness. For milling, any all-around carbide grade is suitable.
For detailed carbide grades recommendations,check the table below.
Recommended cutting speed range for turning at stable conditions is 800 - 1100 [SFM] / 245 - 335 [m/min].
Recommended cutting speed range for milling with stable clamping and short overhang is 510 - 670 [SFM] / 155 - 205 [m/min]
For detailed cutting speed recommendations, check the table below.
Equivalent International Designations for Steel A105
| Standard |
Name |
| SAE |
A105 |
| DIN |
C22-8 |
| UNS |
K03501 |
| ANFOR |
A48CP |
Chemical Composition for Steel A105
| Element |
Amount |
| Manganese (Mn) |
0.6-1.05% |
| Nickel(Ni) |
0.4% |
| Copper(Cu) |
0.4% |
| Carbon (C) |
0.35% |
| Chromium (Cr) |
0.3% |
| Phosphorus (P) |
0.035% |
| Silicon (Si) |
0.15-0.35% |
| Molybdenum (Mo) |
0.12% |
| Sulfur (S) |
0.04% |
Cutting Speeds Recomendations for Steel A105
| Application |
Vc (m/min) |
Vc (SFM) |
| Turning |
245-335 |
800-1100 |
| Milling |
155-205 |
510-670 |
| Parting |
120-160 |
390-520 |
| Grooving |
140-185 |
460-610 |
| Drilling |
100-135 |
330-440 |
Important! The speed estimation is given for an ideal situation:
- Most suitable carbide grade
- Stable tool clamping
- Stableworkpiece clamping
- Goodqualityraw material
- Ashort overhangof the cutting tool.
- Nominalhardnessof the material.
- etc.
Recommended Carbide Grades for Steel A105
Grade for Milling (Indexable)
Recommended Insert Cutting Edge Geometry for Steel A105
| Honing Siz |
0.05-0.08 mm / 0.002-0.003" |
| Rake Angl |
11° -13° |
| Land Angl |
Positive |
| Land Widt |
0.20-0.30 mm / 0.008-0.012" |
