Steel A34-2NE


General Information for Steel A34-2NE

Material Group P - Steel
Sub-Group Low Carbon Steel
Tensile Strength 460-500 [N/mm^2]
Machinability 65% - 80%

Machining A34-2NE Steel: Balancing Strength and Machinability

A34-2NE steel, a chromium-molybdenum alloy steel designed for high-temperature bolting applications, offers a unique combination of strength and machinability. While its alloying elements enhance its mechanical properties, they also pose certain challenges during machining.

Understanding the Machinability of A34-2NE Steel:

  • Composition: A34-2NE contains chromium and molybdenum, which contribute to its high-temperature strength and corrosion resistance. However, these elements can also increase the material's hardness and abrasiveness, potentially leading to increased tool wear and difficulties in chip formation.
  • Heat Treatment: The heat treatment of A34-2NE steel significantly impacts its machinability. In its annealed state, it is relatively soft and easier to machine. However, in its quenched and tempered condition, it becomes harder, requiring adjustments to cutting parameters and tool selection.

Overcoming Machinability Challenges:

  1. Sharp Cutting Edge: Maintaining a sharp cutting edge is crucial to minimize tool wear and ensure efficient chip formation. Regularly inspect and replace worn tools, especially when machining hardened A34-2NE.

  2. Carbide Grade Selection:

    • Turning (annealed condition): Opt for a grade with a hard substrate and CVD or PVD coating, depending on desired cutting speeds and tool life.
    • Turning (hardened condition): Choose a grade with a tougher substrate and wear-resistant coating, such as TiAlN or AlTiN.
    • Milling: Utilize a grade with a semi-hard substrate and thin PVD coating for general milling operations.
  3. Cutting Speed Optimization:

    • Annealed Condition: Take advantage of the softer material to achieve higher cutting speeds. Refer to manufacturer recommendations or machining data for specific guidelines.
    • Hardened Condition: Reduce cutting speeds to accommodate the increased hardness and avoid excessive tool wear.
    • Milling: Maintain cutting speeds that balance productivity with chip evacuation and tool wear.

Additional Tips for Machining A34-2NE Steel:

  • Coolant: Employ a suitable coolant designed for high-temperature alloys to reduce heat, friction, and chip welding during machining.
  • Tool Geometry: Select a tool geometry that promotes efficient chip formation and evacuation, considering the specific hardness of the A34-2NE steel.
  • Workholding and Machine Rigidity: Ensure secure workholding and use a rigid machine tool setup to minimize vibrations, especially when machining hardened material.

By understanding the unique characteristics of A34-2NE steel and implementing these strategies, machinists can effectively manage its machining challenges and achieve desired results in terms of productivity, tool life, and surface finish.

International Designations for Steel A34-2NE that are equivalent

Standard Name
WNR 1.0034
DIN RSt34-2
BS 144934/20HR,HS,CR,CS
ANFOR A34-2NE
UNI Fe330BFN

There is no direct SAE equivalent for A34-2NE steel. A34-2NE is an ASTM standard for chromium-molybdenum steel bolts and studs for high-temperature service. SAE standards focus on specific steel grades with defined chemical compositions and mechanical properties.

However, depending on the specific application and composition of your A34-2NE steel, some SAE grades might exhibit similar properties. For example, if your A34-2NE steel has a high chromium and molybdenum content, SAE 4140 or 4340 could be potential substitutes.

It's crucial to consult with a materials expert or refer to the specific composition of your A34-2NE steel to determine the most appropriate SAE grade for your application.

Chemical Composition for Steel A34-2NE

Due to limited data availability, the exact chemical composition of A34-2NE steel cannot be provided through this text-based response.

The chemical composition for Steel A34-2NE is as follows:

  • Carbon (C): 0.1 - 0.25%
  • Manganese (Mn): 0.45 - 0.70%
  • Phosphorus (P): 0.045% max
  • Sulfur (S): 0.045% max
  • Silicon (Si): 0.15 - 0.30%

This low carbon steel is used for structural applications due to its good weldability and machinability.

  • Suggestion, contact the manufacturer or a metallurgical engineer:  familiar with high-temperature alloys can likely provide you with the chemical composition or direct you to the appropriate resources.

Cutting speed recommendations for non-alloyed steel with 0.1-0.25% carbon

Application Vc (m/min) Vc (SFM)
Turning 285-350 930-1150
Milling 175-220 570-720
Parting 135-170 440-560
Grooving 160-195 520-640
Drilling 115-140 380-460

Cutting Speed Recommendations: Understanding Ideal vs. Real-World Machining
  • The cutting speeds provided on this website are estimations based on ideal machining conditions. While they serve as a valuable starting point, achieving optimal results in your specific setup requires careful consideration of various factors that can significantly influence cutting performance.

    Factors to Consider for Optimal Cutting Speed:

    1. Carbide Grade: The most suitable carbide grade depends on the material being machined, the specific operation (turning, milling, drilling, etc.), and desired outcomes (tool life, surface finish, productivity). Consult our grade selection guides or seek expert advice to ensure the right choice for your application.

    2. Tool and Workpiece Clamping: Secure and rigid clamping of both the cutting tool and the workpiece is paramount. Any vibrations or movement can negatively impact accuracy, surface finish, and tool life. Ensure proper clamping techniques and utilize high-quality tooling systems to minimize these risks.

    3. Raw Material Quality: Variations in material composition, hardness, microstructure, and even internal stresses can significantly affect machinability. Source high-quality materials from reputable suppliers and verify their properties to ensure consistent and predictable machining performance.

    4. Tool Overhang: A shorter tool overhang minimizes deflection and vibration, leading to improved cutting stability and surface finish. Strive for the shortest possible overhang without compromising tool reach and accessibility.

    5. Material Hardness: The hardness of the workpiece material directly impacts cutting forces and tool wear. Verify that the material's hardness falls within the expected range for the chosen carbide grade and cutting parameters. If needed, consider pre-hardening or heat treatment to achieve the desired hardness level.

    6. Additional Factors: Numerous other factors can influence cutting speed optimization, including:

      • Coolant/Lubricant Selection and Application: Effective cooling and lubrication are essential for heat dissipation, chip evacuation, and reducing friction. Choose the appropriate type and delivery method for your specific machining operation.
      • Tool Geometry: Optimize rake and clearance angles, as well as chipbreaker design, to promote efficient chip formation and evacuation for your chosen material and operation.
      • Machine Rigidity: A rigid machine tool setup minimizes vibrations and ensures consistent cutting conditions, leading to improved accuracy and surface finish. Consider the machine's capabilities and limitations when setting cutting parameters.
      • Cutting Parameters: Feed rate and depth of cut, along with cutting speed, play a crucial role in achieving desired results. Carefully balance these parameters based on your specific machining goals, tool capabilities, and material properties.

    By meticulously evaluating these factors and adjusting cutting speeds accordingly, you can fine-tune your machining process to achieve superior results. Remember, the recommended cutting speeds are a guideline, and real-world optimization requires a holistic approach that considers the entire machining ecosystem.

    Disclaimer: The information provided on this website is intended as a general guideline. It is crucial to consult with tooling experts, refer to manufacturer recommendations, and conduct thorough testing to determine the optimal cutting parameters for your specific application.

Grade for Turning

Grade Coating Apps Range 05 10 15 20 25 30 35 40 45
SHARP METAL
YP15T PVD & CVD P15
PM25 PVD TiAlN P20
NC25 PVD TiAlN P20
TN15 PVD TiAlN P20
TN20 PVD TiAlN P20
TIN25 PVD TiAlN P20
YP25T PVD & CVD P25
YP35T PVD & CVD P35
FM CARBIDE
FM2533 CVD P10 - P10
FM2543 CVD P20
FM324 PVD P20-P30
FM2553 CVD P30
CANELA
NC25 CVD P05 - P20
TN15 CVD P10 - P25
TN20 CVD P20 - P25
PM25 Uncoated P20 - P35
TIN25 PVD P20 - P35
PM40 Uncoated P35 - P45
TN30 CVD P40
TL20 PVD P20
KM15 Uncoated P15
ISCAR
IC807 (IC907) PVD P05 - P25
IC8150 CVD P10-P15
IC8250 CVD P15-P30
IC830 (IC328) PVD P25 - P45
Seco
TH1500 CVD P05 - P05
TP0501 CVD P05 - P20
TP1501 CVD P10 - P25
TP2501 CVD P15 - P35
CP500 PVD P15 - P40
CP600 PVD P25 - P45
TP3501 CVD P30 - P40
KENNAMETAL
KCP05B (KCP05) CVD P05 - P10
KCP10B (KCP10) CVD P10 - P20
KCU10 (KC5010) PVD P10-P20
KCP25B (KCP25) CVD P20 - P30
KCU25 (KC5025) PVD P20-P30
KCP30 CVD P30-P40
KCP40B (KCP40) CVD P35 - P45
SANDVIK
GC1115 PVD P05 - P20
GC4305 CVD P05 - P10
GC4415 (GC4315) CVD P10 - P15
GC4425 (GC4325) CVD P15 - P30
GC1125 PVD P20 - P30
GC4335 CVD P30-P40
TUNGALOY
T9205 (T9105) CVD P05 - P10
T9215 (T9115) CVD P10 - P20
AH725 PVD P15 - P30
T9225 (T9125) CVD P15 - P25
T9235 (T9135) CVD P30 - P40
WALTER
WPP10S (WPP10) CVD P05 - P20
WPP05S (WPP05) CVD P05 - P15
WPP20S (WPP20) CVD P10 - P30
WPP30S (WPP30) CVD P20 - P40
MITSUBISHI
UE6105 CVD P05 - P15
MC6015 (UE6010) CVD P10 - P20
VP15TF PVD P10 - P30
MC6025 (UE6020) CVD P15 - P20
MC6035 (UE6035) CVD P25 - P40
SUMITOMO
AC8015P (AC810P) CVD P05 - P15
AC8020P CVD P10 - P25
AC1030U PVD P10 - P30
AC8025P (AC820P) CVD P15 - P30
AC8035P (AC830P) CVD P25 - P45
KYOCERA
PR1005 PVD P15
PR930 PVD P15-P25
PR1115 PVD P15-P25
PR1535 PVD P25
PR1025 PVD P15-P35
PR1225 PVD P15-P35
PR1425 PVD P15-P35
PR1532 PVD P35
PR1625 PVD P35
Hitachi Tool
IP2000 PVD P25
IP3000 PVD P35
YG-1
1001 CVD TiCN P10
3010 CVD TiCN P20
3030 CVD TiCN P30
3030 PVD P35
801 PVD TiAlN P15-P30
3020 CVD TiCN P20-P30
KORLOY
PC8105 PVD P15
PC8110 PVD P15
PC8115 PVD P25
PC5300 PVD P25-P35
ZCC
YBG101 PVD P15
YBG102 PVD P15
YBG105 PVD P15
YB9320 PVD P25
YBG205 PVD P25
YBG202 PVD P25
YBG302 PVD P35

Grade for Parting Off

Grade Coating Apps Range 05 10 15 20 25 30 35 40 45 50
FM CARBIDE
FM20 Uncoated P20-P30
FM2553 CVD P30
CANELA
PM25 Uncoated P25
PM40 Uncoated P40
SANDVIK
GC1125 PVD P05 - P20
GC1135 CVD P15 - P35
ISCAR
IC808 (IC908) PVD P05 - P30
IC830 (IC328) PVD P20-P40
SECO
TGP45 CVD P10 - P45
CP500 PVD P20 - P45
T350M CVD P25 - P45
CP600 PVD P30 - P50
KENNAMETAL
KCU10 PVD P05 - P20
KCU25 PVD P20 - P30
WALTER
WKP13S CVD P05 - P20
WSM23S PVD P10 - P30
WSM33S (WSM33) PVD P20-P40
WSM43S PVD P30 - P45
SUMITOMO
AC1030U (AC530U) PVD P10 - P25
AC520U PVD P15 - P30
AC830P CVD P20 - P40
TUNGALOY
AH725 PVD P15 - P30
AH7025 PVD P20 - P30
GH130 PVD P25 - P40
MITSUBISHI
VP10RT PVD P05 - P10
VP20RT PVD P10 - P30
VP15TF PVD P10 - P30


Grade for Grooving

Grade Coating Apps Range 05 10 15 20 25 30 35 40 45
FM CARBIDE
FM2543 CVD P20
FM90 DLC P10
CANELA
PM25 Uncoated P25
PM40 Uncoated P40
SANDVIK
GC1125 PVD P05 - P35
ISCAR
IC807 (IC907) PVD P05 - P10
IC808 (IC908) PVD P10 - P25
IC830 (IC328) PVD P20 - P40
KENNAMETAL
KC5010 PVD P10 - P20
KCU10 PVD P10 - P20
KC5025 PVD P20 - P30
KCU25 PVD P20 - P30
WALTER
WKP13S CVD P05 - P20
WSM23S PVD P10 - P30
WSM33S (WSM33) PVD P20-P40
WSM43S PVD P30 - P45
SECO
CP500 PVD P10 - P25
CP600 PVD P20 - P40
TUNGALOY
T9225 (T9125) CVD P15 - P25
AH725 PVD P15 - P30
AH7025 PVD P20 - P40
GH130 PVD P25 - P40
MITSUBISHI
VP10RT PVD P05 - P10
VP20RT PVD P10 - P25
MY5015 CVD P10 - P20
VP30RT PVD P20 - P40
SUMITOMO
AC1030U (AC530U) PVD P10 - P25
AC520U PVD P15 - P30
AC830P CVD P20 - P40

Grade for Milling (Indexable)

Grade Coating Apps Range 05 10 15 20 25 30 35 40 45
FM CARBIDE
FM125 PVD P15 - P35
CANELA
PM25 Uncoated P05
PM40 Uncoated P05
TL10 PVD & CVD P05
TL20 PVD & CVD P05
TL40 PVD & CVD P05
TIN21 PVD & CVD P05
TIN25 PVD & CVD P05
SANDVIK
GC4330 CVD P10 - P25
GC4340 CVD P25 - P40
ISCAR
IC808 (IC908) PVD P05 - P15
IC830 (IC928) PVD P10 - P40
KENNAMETAL
KC510M PVD P05 - P10
KC522M PVD P10 - P25
KCPK30 CVD P25 - P40
KC725M PVD P30 - P40
WALTER
WKP25S (WKP25) CVD P15 - P35
WKP35G CVD P25 - P45
WSM45X CVD P35 - P45
WSP45S (WSP45S) PVD P35 - P45
SECO
MP1501 CVD P05 - P20
F40M PVD P05 - P50
MP2501 CVD P15 - P45
TUNGALOY
AH120 PVD P15 - P25
AH725 PVD P15 - P30
AH3225 PVD P20 - P35
T3225 CVD P20 - P35
AH130 PVD P25 - P40
AH3135 PVD P30 - P40
MITSUBISHI
MP6120 PVD P10 - P30
MP6130 PVD P20 - P40
VP30RT PVD P25 - P45
SUMITOMO
ACP2000 CVD P05 - P25
XCU2500 CVD P05 - P30
ACU2500 PVD P10 - P40
ACP3000 PVD P20 - P45
SHARP METAL
DP20M PVD TiAlN P15-P25
DP30M PVD TiAlN P30-P35
DP40M PVD P40
KYOCERA
PR830 PVD P20
PR1225 PVD P20
PR1230 PVD P20-P30
PR1525 PVD P20-P340
HITACHI TOOL
CY9020 PVD P20
JP4120 PVD P20
CY150 PVD P20
JS4045 PVD P30
CY250 PVD P30
CY250V PVD P30
CY25 PVD P30
HC844 PVD P30
JS4060 PVD P40
PTH30E PVD P40
PTH40H PVD P40
JX1060 PVD P40
YG-1
602 PVD TiAlN P15-P30
PRAMET
M8310 PVD P20
8215 PVD P20
2003 PVD P20
M8325 PVD P30
M8326 PVD P30
M8330 PVD P30
M8340 PVD P40
M8345 PVD P40
M8346 PVD P40
KORLOY
PC3600 PVD P20-P30
PC3500 PVD P30
PC3700 PVD P30
PC5400 PVD P40
ZCC
YBG102 PVD P20
YBG202 PVD P20
YBG252 PVD P20
YBG302 PVD P30


Recommended Insert Cutting Edge Geometry for Steel A34-2NE

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"