Forged Carbon, Alloy & Tool Steel 

Forged Carbon, Alloy & Tool Steel for High Strength & Toughness

Forged carbon, alloy and tool steels are used for applications in just about every industry. Carbon steel is generally the lowest cost option for steel. Many grades of carbon steels are hardenable through heat treatment that includes quenching and tempering steps; however, the super high strength of stainless steels cannot be achieved with carbon steels.

Carbon steel grades are commonly used for applications that don’t require high strength or operate in high temperature environments.  The hardenability of carbon steels is limited because only carbon is used for the purpose. 

Alloy Steel makes use of additional alloying elements for increased hardenability and improved properties.  Manganese, chromium, nickel and molybdenum are some of the elements used for increased strength, toughness and wear resistance compared to carbon steel.  Other desirable characteristics such as corrosion resistance, strength at elevated temperature and creep resistance are also achieved through alloying element additions.

Tool steel is a combination of selected alloy steel and carbon steel grades and its characteristic high hardness and abrasion resistance make it ideal for cutting and machining various types of metals.   Major alloying elements in tool steel are chromium, molybdenum, vanadium and tungsten.  These carbide formers allow tool steel to resist deformation and maintain a sharp cutting edge at high temperatures.

Scot Forge holds an inventory of various grades for customers to order for their carbon alloy and tool steel forging needs and specifications:

Carbon, Alloy & Tool Steel

1010 1050 17 CrNiMo6 4320 9310 A182F12 MIL-S 23284CL1
1018 1055 2317 4330V 52100 A182F22 MIL-S 23284CL2
1020 1060 3310 4340 ABS Grade 2 A 182F91 NITRALLOY "N"
1021 1065 4130 4350 EX55 A336F1 NITRALLOY 135
1022 1070 4130API 4620 HY80 A336F22A D-2
1026 1080 4140 4820 HY100 A350LF2 H-13
1029 1117 4142 6150 A 105 A350LF3 L-6 
1030  1141 4145 8620 A182FI A508CL2  
1035  1146 4150 8622 A182F5 A508CL3  
1040 1541V 4150 RES. 8630  A182F9 A723GR2  
1045 15B22 43B17 8822 A182F11 A723GR3  


Advantages of Forged Carbon, Alloy & Tool Steel

With carbon steel, there are 4 main grades: low carbon steel, medium carbon steel, high carbon steel, and very high carbon steel.

Low Carbon Steel

Low carbon steel has 0.05% to 0.25% carbon which allows the material to be ductile. Low carbon steel is a low cost option for applications where high strength is not a consideration.

Medium Carbon Steel

Medium carbon steel has 0.29% to 0.54% carbon which contains a higher amount of manganese and allows the material to be quenched and tempered after forging.  These forgings offer higher strength and toughness than low carbon steels, yet avoid the higher costs associated with the highly alloyed stainless steels.

High and Very High Carbon Steel

High and very high carbon steel has 0.55% to 2.1% carbon which allows the material to achieve high hardness and resilience.

Carbon steel hardened by heat treatment has increased strength and toughness. Tool steels, containing higher amounts of carbon, are normally forged for the purpose of creating tools that can resist abrasion, fatigue and wear.

Benefits of Forged Carbon, Alloy & Tool Steel

Below is a list of the benefits of using forged carbon, alloy and tool steel:

  • Low cost option for structural applications
  • Good balance between strength and ductility
  • Malleable
  • High strength and toughness
  • Strength at high and low temperatures
  • Good machinability
  • Wear resistant
  • Corrosion resistant in mild atmospheres

​Carbon, Alloy & Tool Steel Forging Capabilities

Our capabilities include eight hydraulic open die presses, four ring mills, six pneumatic hammers, one bar planishing mill and one hydraulic upset press. Scot Forge can produce parts that weigh from 1 lb. to 300,000 lbs. in aluminum materials. Below is a list of our skills for carbon alloy and tool steel forging:

  • Round, square or hex bars up to 65" cross section and 10,000 lbs
  • Unique and innovative forged shapes powered by simulation and CAD software
  • Discs up to 144" O.D. with variable diameter and thickness ratios or combos and 100,000 lbs
  • Single or multiple O.D./I.D. up to 90" O.D. 2" minimum wall thickness and 100,000 lbs
  • Single, doubled or tapered hubs up to 144" O.D. and 100,000 lbs
  • Rolled rings to 252" O.D., 49" height, and 100,000 lbs
  • Open die rings to 144" O.D., 90" height, and 100,000 lbs
  • Semi-closed die powered by CAD and simulation software
  • Step shafts concentric or eccentric to 65" O.D. and up to 100,000 lbs

In addition, we provide value-added processes such as saw cutting, heat treating, contour torch cutting, destructive testing, metallurgical analysis and Level III nondestructive testing for all carbon alloy and tool steel forging.

Quality Assurance

Scot Forge is proud to be ISO 9001:2015 certified as well as AS9100D and committed to providing outstanding customer satisfaction. Further pursuance of aerospace products has led to NADCAP accreditation in both Heat Treatment for carbon alloy and tool steel material and Nondestructive Testing. By developing a personal relationship with Scot Forge, each customer is valued and placed with a qualified team that will see through each carbon alloy and tool steel forging delivered from inquiry stage to order placement, expediting and shipping.