Carbon Steel Welding Services


Carbon steel is one of the most widely used grades of steel for CNC machining and welding processes. Superior Joining Technologies, Inc. has experience and expertise working with different grades of carbon steel, making sure our carbon steel CNC machined parts and carbon steel welding services beat your expectations for quality and timely completion.

Carbon steel is an iron-carbon alloy with carbon content ranging from .0218 percent to 2.11 percent. It also contains small amounts of silicon, manganese, sulfur and phosphorus. Carbon steel has a higher carbon content than mild steel making it less ductile, but stronger. Generally, the higher the carbon content in carbon steel, the higher the hardness and strength, but the lower the plasticity.

Properties and Benefits of Carbon Steel

  • Low carbon steel
    • Less than .25 percent carbon
    • Low hardness and cost
    • High ductility, toughness, machinability, and weldability
    • Used in automobile body components, structural shapes (I-beams, channel, and angle iron),
  • Medium carbon steel
    • Between .25 and .6 percent carbon
    • Low hardenability
    • Medium strength, ductility, and toughness
    • Used in railway tracks, train wheels, crankshafts, gears, and machinery parts
  • High carbon steel
    • Between .6 and 1.25 percent carbon
    • High hardness and strength
    • Low ductility
    • Used in cutting tools, springs, high strength wire and dies

CNC Carbon Steel Machining

Superior Joining Technologies, Inc. has years of experience providing CNC machining for a wide variety of carbon steel products including bolts, nuts, pins and hooks. CNC machining decreases manufacturing costs, improves production speed and increases efficiency. We provide tolerances as close as +/- .0002” and complete intricate, finished parts quickly and on time.

Carbon Steel GTAW Welding Services

Superior Joining Technologies, Inc. provides high-quality carbon steel manual welding in the form of our NADCAP accredited Gas Tungsten Arc Welding (GTAW) or Tungsten Inert Gas (TIG) Welding. We provide clean, highly controllable, and precise welds for carbon steel. Additionally, we offer microscopic laser beam welding (Micro LBW), laser welding, seam welding and resistance spot welding. All these procedures are suitable for use with carbon steel.

CNC Machined and/or GTAW Welded Carbon Steel Parts

  • Automobile body components
  • Construction and bridge components
  • Crankshafts
  • Gears
  • Machinery parts
  • Cutting tools
  • Springs
  • High strength wire
  • Dies

Industry Applications

Carbon steel’s strength and ductility depend on its carbon content. This large range in properties makes carbon steel a commonly used metal in a wide variety of industries. These include:

  • Defense
  • Medical
  • Dental
  • Automotive
  • Electrical
  • Motion control and instrumentation
  • Sporting goods
  • Consumer goods

Carbon Steel Grades

Superior Joining Technologies, Inc. will work with any grade of carbon steel. Some of the more popular grades are listed below.

  • T7, T8
    • Make parts that bear certain impact and require toughness
    • Hammer, punch, chisel, woodworking tools and scissors
  • T9, T10, T11
    • Tools with low impact, high hardness and wear resistance
    • Taps, small drills, dies and hand saw blades
  • T12, T13
    • Tools that are not impacted
    • Files, scrapers, razors and measuring tools
  • 08F Steel
    • Low carbon content, good plasticity, low strength
    • Used for stamping parts such as automobile and instrument housing
  • 20 # Steel
    • Good plasticity and weldability
    • Used for parts with low strength and carburized parts
    • Examples include hoods, welding containers, small shafts, nuts, washers and carburized gears
  • 45 # Steel
    • Good comprehensive mechanical properties after quenching and tempering
    • Used for mechanical parts with large force such as gears, connecting rods, machine tools and spindles
  • 60 # Steel
    • High strength
    • Used to manufacture springs, wheel flanges and low-speed wheels

Rely on Superior Joining

Superior Joining certified AS9100, ISO9001, and is a NADCAP-accredited facility. We are a carbon steel CNC machined parts provider with processes that are approved by Boeing, GE, Unison, Collins Aerospace and Safran. We are a highly technical and precise welding and CNC machining operation serving any industry that needs a high level of expertise and documentation. We work to support our customers, grow each employee, and then reach out to have a positive impact on our community. 

In addition to carbon steel GTAW welding services, we offer our services for a variety of other materials including aluminum, stainless steel, titanium and nylon.

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