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Chromoly - A Low Alloy Chromium-Molybdenum Steel

Chromoly steel is a low alloy steel which finds its uses in many different industries due to its high degree of strength and toughness.

The name Chromoly refers to the main alloying supplements Chromium and Molybdenum.

This steel group can be identified by the numbering 41xx like the 4140 steel, 4142, or the 4130.

Chromium-Molybdenum steel has more strength than mild steel, a higher tensile strength, and is easily hardened. 
chromoly-steel-advantages
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Shopping Options
Types of Steel
  1. Case Hardening Steel
  2. Heat-Treatable Steel
  3. High Speed Steel
  4. Stainless Steel
  5. Tool Steel
Specifications
  1. $mart Flat Stock
  2. $mart Flat Stock Metric
  3. $mart Flat Stock Metric, regular
  4. $mart Flat Stock, regular
  5. Cold Finished Rounds
  6. Cold Finished Rounds Metric
  7. Decarb Free Rounds
  8. Drill Rod
  9. Drill Rod Metric
  10. EDM Block hardened
  11. Hard Flat Metric
  12. Precision Ground Flat Stock Metric, oversize
  13. Precision Ground Flat Stock Metric, regular
  14. Precision Ground Flat Stock, oversize
  15. Precision Ground Flat Stock, regular
Steel Grade
  1. 1018 / A36
  2. 52100 / L1
  3. A8 mod. / Chipper
  4. 4140 / 4142
  5. 4140 PH / 4142 PH
  6. 316L / 316
  7. 1045
  8. 2990 mod.
  9. 303
  10. 304
  11. 314
  12. 316Ti
  13. 410
  14. 420
  15. 420 ESR
  16. 420 LC
  17. 420 mod.
  18. 420FM
  19. 420RM
  20. 430F
  21. 431
  22. 440B
  23. 440C
  24. 5115
  25. 5120
  26. 6F7 ESR
  27. A2
  28. D2
  29. H10
  30. H13
  31. H13 ESR
  32. HSS M2
  33. HSS PM M4 HC
  34. L3
  35. L6
  36. O1
  37. P20
  38. P20 PH
  39. P20+Ni
  40. S1
  41. S7
  42. Toolox 33
  43. Toolox 44
  44. W1
Width
  1. 1/8"
  2. 5/32"
  3. 3/16"
  4. 7/32"
  5. 1/4"
  6. 9/32"
  7. 5/16"
  8. 3/8"
  9. 7/16"
  10. 1/2"
  11. 9/16"
  12. 5/8"
  13. 3/4"
  14. 7/8"
  15. 1"
  16. 1-1/8"
  17. 1-1/4"
  18. 1-1/2"
  19. 1-3/4"
  20. 2"
  21. 2-1/4"
  22. 2-1/2"
  23. 3"
  24. 3-1/2"
  25. 4.0 mm
  26. 4"
  27. 4-1/2"
  28. 5.0 mm
  29. 5"
  30. 5-1/2"
  31. 6.0 mm
  32. 6"
  33. 6.2 mm
  34. 6-1/2"
  35. 7"
  36. 7-1/2"
  37. 8.0 mm
  38. 8"
  39. 8.2 mm
  40. 8-1/2"
  41. 9"
  42. 9-1/2"
  43. 10.0 mm
  44. 10"
  45. 10.3 mm
  46. 10-1/2"
  47. 11"
  48. 11-1/2"
  49. 12.0 mm
  50. 12"
  51. 12.3 mm
  52. 13"
  53. 14"
  54. 15.0 mm
  55. 15"
  56. 15.3 mm
  57. 16.0 mm
  58. 16"
  59. 16.3 mm
  60. 17"
  61. 18.0 mm
  62. 18"
  63. 18.3 mm
  64. 19"
  65. 20.0 mm
  66. 20"
  67. 20.3 mm
  68. 25.0 mm
  69. 25.3 mm
  70. 30.0 mm
  71. 30.3 mm
  72. 32.0 mm
  73. 32.3 mm
  74. 33 mm
  75. 35.0 mm
  76. 35.3 mm
  77. 40.0 mm
  78. 40.3 mm
  79. 43 mm
  80. 50.0 mm
  81. 50.3 mm
  82. 53 mm
  83. 60.0 mm
  84. 60.3 mm
  85. 63 mm
  86. 63.0 mm
  87. 63.3 mm
  88. 70.0 mm
  89. 70.3 mm
  90. 73 mm
  91. 80.0 mm
  92. 80.3 mm
  93. 83 mm
  94. 90.0 mm
  95. 90.3 mm
  96. 93 mm
  97. 100.0 mm
  98. 100.3 mm
  99. 103 mm
  100. 120.0 mm
  101. 120.3 mm
  102. 123 mm
  103. 125.0 mm
  104. 125.3 mm
  105. 140.0 mm
  106. 143 mm
  107. 150.0 mm
  108. 150.3 mm
  109. 153 mm
  110. 160.0 mm
  111. 160.3 mm
  112. 163 mm
  113. 175.0 mm
  114. 175.3 mm
  115. 180.0 mm
  116. 180.3 mm
  117. 183 mm
  118. 200.0 mm
  119. 200.3 mm
  120. 203 mm
  121. 223 mm
  122. 243 mm
  123. 250 mm
  124. 250.0 mm
  125. 250.3 mm
  126. 253 mm
  127. 263 mm
  128. 283 mm
  129. 300.0 mm
  130. 300.3 mm
  131. 303 mm
  132. 323 mm
  133. 343 mm
  134. 353 mm
  135. 363 mm
  136. 383 mm
  137. 403 mm
  138. 423 mm
  139. 443 mm
  140. 453 mm
  141. 463 mm
  142. 483 mm
  143. 503 mm
Length
  1. 4"
  2. 8"
  3. 12"
  4. 18"
  5. 24"
  6. 36"
  7. 250 mm
  8. 300 mm
  9. 500 mm
  10. 600 mm
  11. 914 mm
  12. 1,000 mm
Thickness
  1. 1/32"
  2. 3/64"
  3. 1/16"
  4. 5/64"
  5. 3/32"
  6. 7/64"
  7. 1/8"
  8. 9/64"
  9. 5/32"
  10. 11/64"
  11. 3/16"
  12. 13/64"
  13. 7/32"
  14. 15/64"
  15. 1/4"
  16. 17/64"
  17. 9/32"
  18. 19/64"
  19. 5/16"
  20. 21/64"
  21. 11/32"
  22. 23/64"
  23. 3/8"
  24. 25/64"
  25. 13/32"
  26. 27/64"
  27. 7/16"
  28. 29/64"
  29. 15/32"
  30. 31/64"
  31. 1/2"
  32. 33/64"
  33. 17/32"
  34. 35/64"
  35. 9/16"
  36. 37/64"
  37. 19/32"
  38. 39/64"
  39. 5/8"
  40. 41/64"
  41. 21/32"
  42. 43/64"
  43. 11/16"
  44. 45/64"
  45. 23/32"
  46. 47/64"
  47. 3/4"
  48. 49/64"
  49. 25/32"
  50. 51/64"
  51. 13/16"
  52. 27/32"
  53. 7/8"
  54. 57/64"
  55. 29/32"
  56. 15/16"
  57. 31/32"
  58. 63/64"
  59. 1.0 mm
  60. 1"
  61. 1 -1/16"
  62. 1-1/16"
  63. 1 -1/8"
  64. 1-1/8"
  65. 1-3/16"
  66. 1 -1/4"
  67. 1-1/4"
  68. 1 -3/8"
  69. 1-3/8"
  70. 1-7/16"
  71. 1 -1/2"
  72. 1-1/2"
  73. 1.5 mm
  74. 1-9/16"
  75. 1 -5/8"
  76. 1-5/8"
  77. 1-11/16"
  78. 1 -3/4"
  79. 1-3/4"
  80. 1-13/16"
  81. 1 -7/8"
  82. 1-7/8"
  83. 2.0 mm
  84. 2"
  85. 2.2 mm
  86. 2-1/4"
  87. 2.3 mm
  88. 2-1/2"
  89. 2.7 mm
  90. 3.0 mm
  91. 3"
  92. 3.2 mm
  93. 3.3 mm
  94. 3-1/2"
  95. 3.7 mm
  96. 4.0 mm
  97. 4"
  98. 4.2 mm
  99. 4.3 mm
  100. 4-1/2"
  101. 4.7 mm
  102. 5.0 mm
  103. 5"
  104. 5.2 mm
  105. 5.3 mm
  106. 5-1/2"
  107. 6.0 mm
  108. 6.2 mm
  109. 6.3 mm
  110. 7.2 mm
  111. 8.0 mm
  112. 8.2 mm
  113. 8.3 mm
  114. 9.2 mm
  115. 10.0 mm
  116. 10.3 mm
  117. 12.0 mm
  118. 12.3 mm
  119. 14.0 mm
  120. 15.0 mm
  121. 15.3 mm
  122. 16.0 mm
  123. 16.3 mm
  124. 18.0 mm
  125. 18.3 mm
  126. 20.0 mm
  127. 20.3 mm
  128. 25.0 mm
  129. 25.3 mm
  130. 30.0 mm
  131. 30.3 mm
  132. 32.0 mm
  133. 32.3 mm
  134. 40.0 mm
  135. 40.3 mm
  136. 50.0 mm
  137. 50.3 mm
  138. 60.3 mm
  139. 70.3 mm
  140. 80.3 mm
  141. 100.3 mm
Units of Measurement
  1. Imperial
  2. Metric
Available Sizes
  1. Oversize
  2. Regular
Shape
  1. flat
  2. round
  3. square

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Items 1-36 of 2988

Set Descending Direction
  1. 4140 / 4142 - 3/32" x 1" x 12"
    4140 / 4142 - 3/32" x 1" x 12"
    Thickness: 3/32"
    Width: 1"
    Length: 12"
    Size: Oversize
    $26.94
  2. 4140 / 4142 - 1/8" x 1" x 12"
    4140 / 4142 - 1/8" x 1" x 12"
    Thickness: 1/8"
    Width: 1"
    Length: 12"
    Size: Oversize
    $27.37
  3. 4140 / 4142 - 2.3 x 33 x 300 mm
    4140 / 4142 - 2.3 x 33 x 300 mm
    Thickness: 2.3 mm
    Width: 33 mm
    Length: 300 mm
    Size: Oversize
    $27.76
  4. 4140 / 4142 - 3/16" x 1" x 12"
    4140 / 4142 - 3/16" x 1" x 12"
    Thickness: 3/16"
    Width: 1"
    Length: 12"
    Size: Oversize
    $28.14
  5. 4140 / 4142 - 3.3 x 33 x 300 mm
    4140 / 4142 - 3.3 x 33 x 300 mm
    Thickness: 3.3 mm
    Width: 33 mm
    Length: 300 mm
    Size: Oversize
    $28.36
  6. 4140 / 4142 - 7/32" x 1" x 12"
    4140 / 4142 - 7/32" x 1" x 12"
    Thickness: 7/32"
    Width: 1"
    Length: 12"
    Size: Oversize
    $28.53
  7. 4140 / 4142 - 1/4" x 1" x 12"
    4140 / 4142 - 1/4" x 1" x 12"
    Thickness: 1/4"
    Width: 1"
    Length: 12"
    Size: Oversize
    $28.91
  8. 4140 / 4142 - 4.3 x 33 x 300 mm
    4140 / 4142 - 4.3 x 33 x 300 mm
    Thickness: 4.3 mm
    Width: 33 mm
    Length: 300 mm
    Size: Oversize
    $28.96
  9. 4140 / 4142 - 3/32" x 1-1/4" x 12"
    4140 / 4142 - 3/32" x 1-1/4" x 12"
    Thickness: 3/32"
    Width: 1-1/4"
    Length: 12"
    Size: Oversize
    $29.24
  10. 4140 / 4142 - 5.3 x 33 x 300 mm
    4140 / 4142 - 5.3 x 33 x 300 mm
    Thickness: 5.3 mm
    Width: 33 mm
    Length: 300 mm
    Size: Oversize
    $29.56
  11. 4140 / 4142 - 5/16" x 1" x 12"
    4140 / 4142 - 5/16" x 1" x 12"
    Thickness: 5/16"
    Width: 1"
    Length: 12"
    Size: Oversize
    $29.65
  12. 4140 / 4142 - 1/8" x 1-1/4" x 12"
    4140 / 4142 - 1/8" x 1-1/4" x 12"
    Thickness: 1/8"
    Width: 1-1/4"
    Length: 12"
    Size: Oversize
    $29.76
  13. 4140 / 4142 - 6.3 x 33 x 300 mm
    4140 / 4142 - 6.3 x 33 x 300 mm
    Thickness: 6.3 mm
    Width: 33 mm
    Length: 300 mm
    Size: Oversize
    $30.16
  14. 4140 / 4142 - 3/8" x 1" x 12"
    4140 / 4142 - 3/8" x 1" x 12"
    Thickness: 3/8"
    Width: 1"
    Length: 12"
    Size: Oversize
    $30.46
  15. 4140 / 4142 - 3/16" x 1-1/4" x 12"
    4140 / 4142 - 3/16" x 1-1/4" x 12"
    Thickness: 3/16"
    Width: 1-1/4"
    Length: 12"
    Size: Oversize
    $30.69
  16. 4140 / 4142 - 3/32" x 1-1/2" x 12"
    4140 / 4142 - 3/32" x 1-1/2" x 12"
    Thickness: 3/32"
    Width: 1-1/2"
    Length: 12"
    Size: Oversize
    $30.76
  17. 4140 / 4142 - 7/32" x 1-1/4" x 12"
    4140 / 4142 - 7/32" x 1-1/4" x 12"
    Thickness: 7/32"
    Width: 1-1/4"
    Length: 12"
    Size: Oversize
    $31.16
  18. 4140 / 4142 - 2.3 x 43 x 300 mm
    4140 / 4142 - 2.3 x 43 x 300 mm
    Thickness: 2.3 mm
    Width: 43 mm
    Length: 300 mm
    Size: Oversize
    $31.25
  19. 4140 / 4142 - 8.3 x 33 x 300 mm
    4140 / 4142 - 8.3 x 33 x 300 mm
    Thickness: 8.3 mm
    Width: 33 mm
    Length: 300 mm
    Size: Oversize
    $31.35
  20. 4140 / 4142 - 1/8" x 1-1/2" x 12"
    4140 / 4142 - 1/8" x 1-1/2" x 12"
    Thickness: 1/8"
    Width: 1-1/2"
    Length: 12"
    Size: Oversize
    $31.37
  21. 4140 / 4142 - 1/4" x 1-1/4" x 12"
    4140 / 4142 - 1/4" x 1-1/4" x 12"
    Thickness: 1/4"
    Width: 1-1/4"
    Length: 12"
    Size: Oversize
    $31.63
  22. 4140 / 4142 - 1/2" x 1" x 12"
    4140 / 4142 - 1/2" x 1" x 12"
    Thickness: 1/2"
    Width: 1"
    Length: 12"
    Size: Oversize
    $32.00
  23. 4140 / 4142 - 3.3 x 43 x 300 mm
    4140 / 4142 - 3.3 x 43 x 300 mm
    Thickness: 3.3 mm
    Width: 43 mm
    Length: 300 mm
    Size: Oversize
    $32.01
  24. 4140 / 4142 - 3/16" x 1-1/2" x 12"
    4140 / 4142 - 3/16" x 1-1/2" x 12"
    Thickness: 3/16"
    Width: 1-1/2"
    Length: 12"
    Size: Oversize
    $32.46
  25. 4140 / 4142 - 5/16" x 1-1/4" x 12"
    4140 / 4142 - 5/16" x 1-1/4" x 12"
    Thickness: 5/16"
    Width: 1-1/4"
    Length: 12"
    Size: Oversize
    $32.52
  26. 4140 / 4142 - 10.3 x 33 x 300 mm
    4140 / 4142 - 10.3 x 33 x 300 mm
    Thickness: 10.3 mm
    Width: 33 mm
    Length: 300 mm
    Size: Oversize
    $32.55
  27. 4140 / 4142 - 4.3 x 43 x 300 mm
    4140 / 4142 - 4.3 x 43 x 300 mm
    Thickness: 4.3 mm
    Width: 43 mm
    Length: 300 mm
    Size: Oversize
    $32.76
  28. 4140 / 4142 - 7/32" x 1-1/2" x 12"
    4140 / 4142 - 7/32" x 1-1/2" x 12"
    Thickness: 7/32"
    Width: 1-1/2"
    Length: 12"
    Size: Oversize
    $33.01
  29. 4140 / 4142 - 3/8" x 1-1/4" x 12"
    4140 / 4142 - 3/8" x 1-1/4" x 12"
    Thickness: 3/8"
    Width: 1-1/4"
    Length: 12"
    Size: Oversize
    $33.49
  30. 4140 / 4142 - 5.3 x 43 x 300 mm
    4140 / 4142 - 5.3 x 43 x 300 mm
    Thickness: 5.3 mm
    Width: 43 mm
    Length: 300 mm
    Size: Oversize
    $33.52
  31. 4140 / 4142 - 5/8" x 1" x 12"
    4140 / 4142 - 5/8" x 1" x 12"
    Thickness: 5/8"
    Width: 1"
    Length: 12"
    Size: Oversize
    $33.54
  32. 4140 / 4142 - 1/4" x 1-1/2" x 12"
    4140 / 4142 - 1/4" x 1-1/2" x 12"
    Thickness: 1/4"
    Width: 1-1/2"
    Length: 12"
    Size: Oversize
    $33.56
  33. 4140 / 4142 - 12.3 x 33 x 300 mm
    4140 / 4142 - 12.3 x 33 x 300 mm
    Thickness: 12.3 mm
    Width: 33 mm
    Length: 300 mm
    Size: Oversize
    $33.74
  34. 4140 / 4142 - 6.3 x 43 x 300 mm
    4140 / 4142 - 6.3 x 43 x 300 mm
    Thickness: 6.3 mm
    Width: 43 mm
    Length: 300 mm
    Size: Oversize
    $34.27
  35. 4140 / 4142 - 3/32" x 2" x 12"
    4140 / 4142 - 3/32" x 2" x 12"
    Thickness: 3/32"
    Width: 2"
    Length: 12"
    Size: Oversize
    $34.58
  36. 4140 / 4142 - 5/16" x 1-1/2" x 12"
    4140 / 4142 - 5/16" x 1-1/2" x 12"
    Thickness: 5/16"
    Width: 1-1/2"
    Length: 12"
    Size: Oversize
    $34.61
Page
per page

WHY IS IT CALLED CHROMOLY STEEL?

The term Chromoly is a combination of Chromium and Molybdenum, showing the main alloying elements of this kind of steel.

Chromium can increase corrosion resistance, though in these steel grades it is not high enough to make it a stainless steel grade.Here it improves hardness penetration and toughness with a moderate corrosion resistance. It enhances the heat-treatability of these steels for improved tensile strength and hardness without getting brittle.

Molybdenum increases strength at high temperatures and creep resistance. It enhances hardenability and fatigue resistance as well as reducing the risk of cracking during welding. This is due to the ability to resist the formation of carbides at the grain boundaries.

CHROMOLY VS. MILD STEEL PRICE DIFFERENCE

Mild steel, a non-alloyed steel, is compared to a chromoly steel, a low alloyed steel, on the lower end of the pay-scale. Any added alloy to the basic combination of iron and carbon adds extra costs. Alloy prices vary and depend on the amount that has to be used within a steel grade. So by adding Chromium and Molybdenum naturally adds extra costs. 

The more alloys that are added or the higher the amount of one particular alloy will increase the costs of that steel grade and make some steels more expensive than others. Having chromium and molybdenum as an alloy in these steel grades gives it better toughness and durability making it usable in applications mild steel might not endure making the price difference justified.

KEY CHARACTERISTICS OF CHROMOLY STEEL:

Here are some key characteristics and uses of chromoly steel:

Strength

Strength to weight ratio and tensile strength: 

Cromoly steel grades have a very high tensile strength, this means that less material can be used to make parts in comparison with other steels, for example mild steel. This can make parts lighter than when they were made from other steels.

Fatigue

Fatigue resistance:

It can withstand repeated stresses without cracking or fracturing. This means tools and parts made from these materials have a longer work life than if they are made from other steel like unalloyed or lower alloyed steels.

Heat

Heat treatability and wear resistance:

Chromoly is easily hardened by heat-treatment as well as work hardening. By nitriding these kinds of steels they can be surface hardened to give them an even harder surface for better wear resistance.

Hardness

Hardness:

Due to its higher carbon and chromium content this steel group has a better hardness than mild steel and also has the ability to be nitrided to increase the surface hardness even more.

Toughness

Toughness and shock resistance:

Chromoly steels have a high toughness which is a benefit for applications where high impact loads are applied to tools or parts made from this material.

Weldability

Weldability:

In its annealed condition the weldability for chromoly steel is good. In its hardened condition the hardness these grades can achieve can be challenging though, cracking and breaking through thermal shock can be avoided by preheating the material evenly.

Automotive

Automotive Industry:

Gears, crankshafts, axles have to withstand high mechanical stresses, chromoly steel can give high strength, fatigue resistance and wear resistance for these parts.

Aerospace

Aerospace Industry:

Landing gear components, engine parts or structural parts which require durability as well as high strength and heat resistance.

Oil / Gas

Oil and Gas Industry:

With good wear resistance , excellent toughness and moderate corrosion resistance chromoly steel can be used for drill collars, drill components or pressure valves in moderate corrosive environments.  

Machinery

Machinery:

Its wear resistance makes it ideal for gears, shafts and industrial equipment. Heavy duty equipment and machinery can handle heavy loads due to its strength and toughness and with the correct heat treatment hardness and toughness can be fine tuned for application requirements.

Molds / Tools

Mold and tool manufacturing:

Chromoly steel can, with the appropriate heat treatment, achieve a hardness which is needed for cutting tools. Its impact resistance makes it possible to absorb shocks and impacts that accrue during stamping for example. 

Bicycle / Motorcycle

Bicycle or Motorcycle Frames:

With a high strength to weight ratio and toughness, durable frames that can withstand impacts and fatigue, can be produced for bicycles and motorcycles.

ABRAMS INDUSTRIES® CHROMOLY STEEL

As a steel supplier with no minimum order quantity or value we have been supplying steel to a wide variety of industries and manufacturers in Germany since 2003, Europe since 2011 and now since 2020 across the U.S.A. and Canada.

We pride ourselves in supplying you with precision in tool steel, high speed steel, stainless steel, heat-treatable steel and case hardening steel in 44 steel grades with more than 83,928 dimensions.

As a chromoly steel supplier we saw, mill and grind for you in our Warehouse in Illinois.