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All articles from hqt
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Painting-Coating
E-coating (Electrophoretic Deposition)
E-coating, also known as electrophoretic deposition (EPD) or electrocoating, is an electrochemical surface coating process where electrically charged paint particles are deposited onto a conductive workpiece immersed in a water-based ...
2026-05-26 -
Heat-Treatment
Quenching & Tempering
Quenching and Tempering is a two-stage heat treatment process that dramatically increases the hardness and strength of steel. The workpiece is first heated above the critical temperature (austenitizing), then rapidly ...
2026-05-26 -
Heat-Treatment
Nitriding
Nitriding is a surface hardening process that diffuses nitrogen into the surface of a steel workpiece at temperatures typically between 450°C – 600°C, below the lower critical temperature (Ac1). Unlike ...
2026-05-26 -
Heat-Treatment
Annealing
Overview Annealing is a heat treatment process that involves heating a material above its critical temperature and then slowly cooling it at a controlled rate. This process eliminates internal stresses, ...
2026-05-26 -
Heat-Treatment
Carburizing
Carburizing is a surface hardening process that increases the carbon content on the surface of low-carbon steel parts (typically < 0.25% C) while leaving the core relatively soft and tough. ...
2026-05-26 -
Anodizing
Hard Anodize (Type III)
Hard anodizing, also known as Type III anodizing or hard coat anodizing, is a specialized electrochemical process that produces an extremely thick and dense aluminum oxide layer. By using lower ...
2026-05-26 -
Anodizing
Color Anodize
Color anodizing, also known as dyed anodizing or electrolytic coloring, is a versatile surface treatment process that produces vibrant, durable colors on aluminum through either dye absorption or electrolytic coloring ...
2026-05-26 -
Anodizing
Clear Anodize (Type II)
Overview Clear anodizing, also known as Type II anodizing or standard anodizing, is an electrochemical process that converts the aluminum surface into a durable aluminum oxide layer. Unlike paint or ...
2026-05-26 -
Anodizing
Black Anodize
Black anodizing is a Type II anodizing process combined with an integrated coloring step that produces a rich, deep black finish on aluminum. The black color is achieved either through ...
2026-05-26 -
Titanium
Titanium Grade 2 (CP Titanium / Commercially Pure)
Titanium Grade 2 (Grade 2 CP Ti), also known as commercially pure titanium, is an unalloyed titanium grade with a minimum purity of 99.3% titanium. It represents the most widely ...
2026-05-26 -
Titanium
Titanium Grade 5 (Ti-6Al-4V)
Titanium Grade 5 (Ti-6Al-4V), often called the "workhorse" titanium alloy, is an alpha-beta titanium alloy containing 6% aluminum and 4% vanadium. It accounts for over 50% of all global titanium ...
2026-05-26 -
Zinc-Magnesium
AZ91D (Magnesium Alloy)
AZ91D is the most widely used magnesium die-casting alloy in the world, accounting for approximately 90% of all magnesium castings produced. An aluminum-zinc-magnesium alloy with approximately 9% aluminum and 1% ...
2026-05-26 -
Zinc-Magnesium
Zamak 3 (Zinc Alloy / Zamak-3)
Zamak 3 (also known as ZAMAK 3 or Alloy 3) is the most widely used die-casting zinc alloy in the world. Part of the Zamak family of zinc-aluminum-magnesium-copper alloys, Zamak ...
2026-05-26 -
Steel
S136 Stainless Mold Steel
S136 (also known as AISI 420 modified, DIN 1.2083, or ASSAB 840 Supreme) is a premium corrosion-resistant martensitic stainless mold steel that occupies the top tier of injection mold steel ...
2026-05-26 -
Steel
Stainless Steel 303
Stainless Steel 303 is a free-machining austenitic stainless steel specifically designed to overcome the machining challenges associated with standard austenitic grades like 304. The addition of selenium and/or sulfur (0.15–0.35%) ...
2026-05-26 -
Steel
Stainless Steel 304
Stainless Steel 304 is the most widely used austenitic stainless steel grade, accounting for more than 50% of all stainless steel production worldwide. Its exceptional corrosion resistance, excellent formability, and ...
2026-05-26 -
Steel
Stainless Steel 316
Stainless Steel 316 is the second most widely used austenitic stainless steel and is specifically engineered for environments requiring superior corrosion resistance. The key differentiator from 304 is the addition ...
2026-05-26 -
Steel
Stainless Steel 416
Stainless Steel 416 is the most easily machinable of all stainless steel grades, making it the default choice when high-volume precision machining is required. As a martensitic (ferromagnetic) stainless, it ...
2026-05-26