CNC Machining Carbon Steel Services
Cost-effective CNC carbon steel machining with 16+ grades available. Partwork delivers reliable mild steel parts across India with 5-7 day delivery. Perfect for structural components and general engineering.
Upload CAD for Carbon Steel (Mild Steel) Machining parts
Overview
Detailed Material Analysis
Carbon steel (Mild Steel) is the most widely used metal in manufacturing due to its excellent machinability, weldability, and low cost. It offers a good balance of strength and ductility, making it ideal for structural applications, fasteners, and general machinery parts. While it lacks corrosion resistance, it can be easily plated or painted.
| Property | Specification |
|---|---|
| Machinability | Excellent – one of the easiest ferrous metals to machine |
| Weldability | Excellent – can be welded by all standard methods |
| Tensile Strength | Moderate (370-600 MPa) – suitable for structural use |
| Corrosion Resistance | Poor – requires surface protection (plating/painting) |
| Cost | Low – usually the most economical metal option |
| Lead Time | 5-7 working days (standard) |
| Typical Price (India) | Low (₹60-120/kg raw material) |
Available Grades & Standards
We offer a wide selection of grades to meet specific engineering requirements, from general purpose to high-performance flight-grade alloys.
| Grade | Standards | Key Features | Typical Applications |
|---|---|---|---|
| 1018 (Mild Steel) | AISI 1018 | Most popular low carbon steel. Excellent weldability and formability | General purpose manufacturing, brackets, mounting plates |
| EN8 / 1045 | 080M40 | Medium carbon steel. Higher strength than 1018, induction hardenable | Axles, shafts, studs, bolts, hydraulic parts |
| A36 | ASTM A36 | Structural steel. Good weldability, lower strength than 1018 | Building frames, structural supports, base plates |
| EN1A / 12L14 | 11SMn30 | Free-machining steel. Lead/Sulphur added. Fastest machining speed | Screw machine parts, fittings, bushings (not weldable) |
| EN3B | 070M20 | General purpose mild steel. Good welding and bending properties | Levers, lightly stressed parts, spacers |
| EN9 | 070M55 | High carbon steel. Hard wearing surface. Low toughness | Cams, sprockets, machine keys |
| St52 / S355 | EN 10025 | High strength structural steel. Better yield strength than A36 | Heavy machinery frames, construction equipment |
| IS 2062 E250 | IS 2062 | Standard Indian structural steel grade (Mild Steel) | General fabrication, infrastructure projects |
| C45 | EN 10083 | Medium carbon engineering steel. Good machinability and strength | Automobile parts, gears, shafts |
| 1215 | AISI 1215 | Free-machining steel (no lead). Fast machining, smooth finish | Fasteners, couplings, fittings |
| 1020 | AISI 1020 | Similar to 1018 but slightly cleaner finish. Carburizing grade | Camshafts, spindles, ratchet wheels |
| EN32B | 080A15 | Case hardening steel. Good core strength | Gears, pins, rollers requiring hard surface |
Common Applications
General Engineering
- Mounting brackets and plates
- Spacers and bushings (EN1A)
- Fasteners and studs (1018)
- Hinges and specialized hardware
Automotive
- Wheel hubs and spacers
- Brake components
- Chassis brackets
- Fluid fittings (12L14)
Structural & Construction
- Base plates for columns (A36)
- Weldments and frames
- Anchor bolts
- Gate and fence components
Heavy Machinery
- Hydraulic cylinder components
- Machine frames (St52)
- Wear plates (EN9)
- Drive shafts (EN8)
Surface Finishing Options
| Finish | Time | Cost |
|---|---|---|
Zinc Plating (Galvanizing) Essential for rust protection (Blue/Yellow/Clear) | +3-5 days | +₹300-800 |
Black Oxide Mild corrosion protection, aesthetic | +2-3 days | +₹100-300 |
Powder Coating Durable, colorful polymer coating | +3-5 days | +₹400-1,200 |
Painting (Spray/PU) Custom color, barrier protection | +3-5 days | +₹500-1,500 |
Hot Dip Galvanizing Heavy duty corrosion protection for outdoor structures | +4-6 days | +₹20-40/kg |
Case Hardening Only for low carbon grades (1018, EN32B) | +7-10 days | +₹2,500-5,000 |
Nickel Plating Decorative and wear resistant | +3-5 days | +₹600-1,500 |
Frequently Asked Questions
Everything you need to know about machining Carbon Steel (Mild Steel) Machining.
Carbon steel will rust quickly if exposed to moisture/humidity. You must specify a finish. Zinc Plating is the standard cost-effective solution. Powder Coating provides better durability and aesthetics. For temporary protection during shipping, we apply a rust-preventive oil.
They are often used interchangeably. Mild steel refers to low-carbon steel (like 1018, A36). Carbon steel is the broader category that includes Medium Carbon (EN8) and High Carbon (EN9) steels. Mild steel is ductile and weldable; High carbon steel is strong and hard but brittle.
Yes, low carbon steels (1018, A36, St52) have excellent weldability. Medium/High carbon steels (EN8, EN9) require pre-heating and controlled cooling to prevent cracking. Free-machining steels (EN1A, 12L14) should not be welded due to sulfur/lead content causing porous brittle welds.
EN1A contains Lead and Sulfur which act as internal chip breakers. This allows it to be machined at very high speeds with minimal tool wear, making it the cheapest option for producing high volumes of turned parts (screws, nuts, bushings).
Ready to Start Your
Next Carbon Steel (Mild Steel) Machining Project?
Join 500+ Indian companies using Partwork for high-precision manufacturing. Upload your data and get an instant quote in minutes.