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Buy Plastic Mold Steel without any Minimum Order Value or Quantity

Mold steels are used in industrial production for the manufacture of molds and tools. They can be utilized for injection molding, die casting, blow molding, and other manufacturing processes.

Due to various requirements, mold steel must possess a range of important properties. This ensures that the molds produced have a long lifespan, fulfill their function and deliver high-quality end products.

Plastic mold steel is a combination of hardness, toughness, wear resistance, corrosion resistance, thermal conductivity, polishability, dimensional stability and form stability.

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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 217-252 of 50996

Set Descending Direction
  1. O1 - 3/64" x 1/2" x 36" reg.
    O1 - 3/64" x 1/2" x 36" reg.
    Thickness: 3/64"
    Width: 1/2"
    Length: 36"
    Size: Regular
    $18.90
  2. D2 - DRM 5.0 x 914 mm (36")
    D2 - DRM 5.0 x 914 mm (36")
    Thickness: 5.0 mm
    Length: 914 mm
    Size: Oversize

    $18.99
  3. O1 - DR 29/64" x 36"
    O1 - DR 29/64" x 36"
    Thickness: 29/64"
    Length: 36"
    Size: Oversize

    $19.06
  4. O1 - 2.2 x 12.3 x 500 mm
    O1 - 2.2 x 12.3 x 500 mm
    Thickness: 2.2 mm
    Width: 12.3 mm
    Length: 500 mm
    Size: Oversize
    $19.15
  5. O1 - 2.0 x 25.0 x 500 mm
    O1 - 2.0 x 25.0 x 500 mm
    Thickness: 2.0 mm
    Width: 25.0 mm
    Length: 500 mm
    Size: Regular
    $19.15
  6. O1 - 1.5 x 30.0 x 500 mm
    O1 - 1.5 x 30.0 x 500 mm
    Thickness: 1.5 mm
    Width: 30.0 mm
    Length: 500 mm
    Size: Regular
    $19.15
  7. O1 - 3.2 x 10.3 x 500 mm
    O1 - 3.2 x 10.3 x 500 mm
    Thickness: 3.2 mm
    Width: 10.3 mm
    Length: 500 mm
    Size: Oversize
    $19.15
  8. O1 - 3/8" x 1/2" x 18" reg.
    O1 - 3/8" x 1/2" x 18" reg.
    Thickness: 3/8"
    Width: 1/2"
    Length: 18"
    Size: Regular
    $19.20
  9. O1 - 3/16" x 1-1/4" x 18" reg.
    O1 - 3/16" x 1-1/4" x 18" reg.
    Thickness: 3/16"
    Width: 1-1/4"
    Length: 18"
    Size: Regular
    $19.20
  10. O1 - 1/32" x 1" x 18" reg.
    O1 - 1/32" x 1" x 18" reg.
    Thickness: 1/32"
    Width: 1"
    Length: 18"
    Size: Regular
    $19.20
  11. O1 - 5/16" x 3/4" x 18" O/S
    O1 - 5/16" x 3/4" x 18" O/S
    Thickness: 5/16"
    Width: 3/4"
    Length: 18"
    Size: Oversize
    $19.20
  12. O1 - 5/32" x 1-1/4" x 18" reg.
    O1 - 5/32" x 1-1/4" x 18" reg.
    Thickness: 5/32"
    Width: 1-1/4"
    Length: 18"
    Size: Regular
    $19.20
  13. O1 - 1/16" x 2" x 18" reg.
    O1 - 1/16" x 2" x 18" reg.
    Thickness: 1/16"
    Width: 2"
    Length: 18"
    Size: Regular
    $19.20
  14. O1 - 5/64" x 1-1/2" x 18" reg.
    O1 - 5/64" x 1-1/2" x 18" reg.
    Thickness: 5/64"
    Width: 1-1/2"
    Length: 18"
    Size: Regular
    $19.20
  15. O1 - 3/32" x 1-1/2" x 18" reg.
    O1 - 3/32" x 1-1/2" x 18" reg.
    Thickness: 3/32"
    Width: 1-1/2"
    Length: 18"
    Size: Regular
    $19.20
  16. 420 - DCF 1/2" x 36"
    420 - DCF 1/2" x 36"
    Thickness: 1/2"
    Length: 36"
    Size: Oversize

    $19.21
  17. D2 - DCF 3/4" x 18"
    D2 - DCF 3/4" x 18"
    Thickness: 3/4"
    Length: 18"
    Size: Oversize

    $19.36
  18. A2 - DR 17/64" x 36"
    A2 - DR 17/64" x 36"
    Thickness: 17/64"
    Length: 36"
    Size: Oversize

    $19.50
  19. O1 - 7/64" x 1-1/4" x 18" reg.
    O1 - 7/64" x 1-1/4" x 18" reg.
    Thickness: 7/64"
    Width: 1-1/4"
    Length: 18"
    Size: Regular
    $19.75
  20. O1 - 3/8" x 1/2" x 18" O/S
    O1 - 3/8" x 1/2" x 18" O/S
    Thickness: 3/8"
    Width: 1/2"
    Length: 18"
    Size: Oversize
    $19.75
  21. O1 - 3/64" x 1-1/4" x 18" reg.
    O1 - 3/64" x 1-1/4" x 18" reg.
    Thickness: 3/64"
    Width: 1-1/4"
    Length: 18"
    Size: Regular
    $19.75
  22. O1 - 3/16" x 1-1/4" x 18" O/S
    O1 - 3/16" x 1-1/4" x 18" O/S
    Thickness: 3/16"
    Width: 1-1/4"
    Length: 18"
    Size: Oversize
    $19.75
  23. A2 - 3/16" x 1/2" x 18" O/S
    A2 - 3/16" x 1/2" x 18" O/S
    Thickness: 3/16"
    Width: 1/2"
    Length: 18"
    Size: Oversize
    $19.75
  24. O1 - 2.2 x 15.3 x 500 mm
    O1 - 2.2 x 15.3 x 500 mm
    Thickness: 2.2 mm
    Width: 15.3 mm
    Length: 500 mm
    Size: Oversize
    $19.80
  25. HSS M2 - DR 5/64" x 36"
    HSS M2 - DR 5/64" x 36"
    Thickness: 5/64"
    Length: 36"
    Size: Oversize

    $19.87
  26. A2 - 1/8" x 1/4" x 36" O/S
    A2 - 1/8" x 1/4" x 36" O/S
    Thickness: 1/8"
    Width: 1/4"
    Length: 36"
    Size: Oversize
    $19.90
  27. O1 - 3/16" x 3/8" x 36" reg.
    O1 - 3/16" x 3/8" x 36" reg.
    Thickness: 3/16"
    Width: 3/8"
    Length: 36"
    Size: Regular
    $19.90
  28. O1 - 1/8" x 5/8" x 36" reg.
    O1 - 1/8" x 5/8" x 36" reg.
    Thickness: 1/8"
    Width: 5/8"
    Length: 36"
    Size: Regular
    $19.90
  29. O1 - DR 15/32" x 36"
    O1 - DR 15/32" x 36"
    Thickness: 15/32"
    Length: 36"
    Size: Oversize

    $20.14
  30. O1 - DRM 6.0 x 914 mm (36")
    O1 - DRM 6.0 x 914 mm (36")
    Thickness: 6.0 mm
    Length: 914 mm
    Size: Oversize

    $20.22
  31. A2 - 5/32" x 1/2" x 18" O/S
    A2 - 5/32" x 1/2" x 18" O/S
    Thickness: 5/32"
    Width: 1/2"
    Length: 18"
    Size: Oversize
    $20.30
  32. A2 - 5/64" x 1/2" x 18" reg.
    A2 - 5/64" x 1/2" x 18" reg.
    Thickness: 5/64"
    Width: 1/2"
    Length: 18"
    Size: Regular
    $20.30
  33. O1 - 1/4" x 1" x 18" reg.
    O1 - 1/4" x 1" x 18" reg.
    Thickness: 1/4"
    Width: 1"
    Length: 18"
    Size: Regular
    $20.30
  34. O1 - 1/4" x 1" x 18" O/S
    O1 - 1/4" x 1" x 18" O/S
    Thickness: 1/4"
    Width: 1"
    Length: 18"
    Size: Oversize
    $20.30
  35. O1 - 9/64" x 1-1/2" x 18" reg.
    O1 - 9/64" x 1-1/2" x 18" reg.
    Thickness: 9/64"
    Width: 1-1/2"
    Length: 18"
    Size: Regular
    $20.30
  36. O1 - 7/32" x 1" x 18" reg.
    O1 - 7/32" x 1" x 18" reg.
    Thickness: 7/32"
    Width: 1"
    Length: 18"
    Size: Regular
    $20.30
Page
per page

VARIOUS TYPES OF STEEL FOR MOLD MAKING

Mold making plays a crucial role in the production of plastic parts. Key industries include the automotive industry, medical technology, electronics, and consumer goods. 

The success of these industries largely depends on the quality and precision of the tools and molds used. The right steel is essential in this context. To meet the specific requirements and challenges of plastic injection molding, various grades or types of steel are used.

Tool steel for mold making

Tool steels such as P20 and H13 are commonly used in mold making. They can produce durable and precise tool steel molds. Plastic mold tool steel offers a balanced ratio of hardness, toughness, and wear resistance. 

Therefore, they are ideal for manufacturing molds that are subjected to high mechanical stresses. Typical applications include injection molds for large plastic parts like automotive components and housings for household appliances.

Stainless steel for mold making

Stainless steels like 420 are particularly popular in mold making due to the corrosion resistance, high-quality, and smooth surface they offer. They are also ideal for environments where the molds are exposed to moisture or corrosive chemicals. 

Stainless steel molds can be polished to a mirror finish, making them indispensable for applications where surface quality is critical to the end product, such as medical technology and optical components.

High speed steel for mold making

HSS mold steels offer excellent wear resistance and hardness. HSS has high creep resistance and can withstand a continuous operating temperature of up to 1022 °F. This operating temperature is unique and sets it apart from cold work steel and hot work steel. 

Therefore, they are ideal for extremely high temperatures and speeds. In mold making, HSS mold steel is often used for inserts in molds needed for processing hard plastics and high-speed production operations.

Case-hardening steel for mold making

Case-hardening steels like 5115 (16MnCr5) feature a combination of a hard, wear-resistant surface and a tough core. These steels are surface-hardened to create a hard layer that protects the plastic mold from wear. The tough core makes them resistant to mechanical stresses. 

This type of steel is commonly used for making mold inserts and cores that are subjected to high mechanical and thermal loads.

HOW TO SELECT THE RIGHT MOLD STEEL FOR MOLDING


1. What type of casting process is being used?
2. What mechanical requirements are needed?
3. What thermal requirements are necessary?
4. What level of chemical resistance must the steel have?
5. Is machinability a critical factor?
6. What surface finish requirements are there?
7. Cost-effectiveness – How much can the steel cost?

plasitc-mold-steel

HOW HARD IS MOLD STEEL?

Are you asking yourself how high the hardness of mould steel is? The working hardness of mold steel ranges from 277 to 711 BHN. Each type of steel has different properties and a specific hardness. The individual values are listed in the table.

Molding steel

Range of Hardness (Brinell Hardness Number)

AISI / SAE A2

601 - 658 BHN

AISI / SAE D2

592 – 658 BHN

AISI / SAE H10

469 - 504 BHN

AISI / SAE H13

469 - 572 BHN

AISI / SAE H13 ESR

469 - 572 BHN

AISI / SAE O1

592 - 658 BHN

AISI / SAE P20

300 - 469 BHN

AISI / SAE P20 PH

300 - 469 BHN

AISI / SAE P20 + Ni

300 - 469 BHN (delivery condition, quenched and tempered)

AISI / SAE S7

572 - 627 BHN

AISI / SAE Toolox 33

277 - 331 BHN (on delivery, without nitriding)

AISI / SAE Toolox 44

419 BHN (on delivery)

AISI / SAE 2990 mod.

592 - 681 BHN

AISI / SAE 420 ESR

469 - 552 BHN

AISI / SAE 420 LC

approx. 308 BHN (on delivery)

AISI / SAE 420 FM

approx. 308 - 456 BHN (on delivery)

AISI / SAE 5120

601 - 627 BHN

AISI / SAE 6F7 ESR

469 - 534 BHN

AISI / SAE M2

658 - 711 BHN

AISI / SAE M4

658 - 711 BHN

AISI / SAE 420

469 - 552 BHN

AISI / SAE 420 RM

277 - 456 BHN

AISI / SAE 440B

approx. 513 - 601 BHN

AISI / SAE 5115

601 - 627 BHN (on the surface)

 

SUMMARY

Mold steel is the generic term for steels which, due to their properties, are used for plastics processing and machining as well as for cold or hot working applications.

Mold steels have to fulfill a great variety of properties. Therefore they can be found amongst tool steel, high speed steel, stainless resistant steel as well as case hardening steel.

The properties below are an overview of properties mold steels should have to guarantee a perfectly finished end product.

• Dimensional stability
• Corrosion resistant
• High wear resistant
• High thermal conductivity
• High polishable
• Good toughness
• Long service life
• Shock resistant
• Impact resistant

plastic-mold-steel-summary