Introduction to Stainless Steel Staples, Screws and nails from Columbia Fasteners
The upgraded stainless steel fasteners have always placed with focusing on a minor consideration to the total materials cost of your building project. Always save, spent, and protect your investment with premium high-quality products from Columbia fasteners which are provided without any compromise to you. You can trust our efficient and cost-effective stainless steel products. Columbia Fasteners provide various genuine and strong quality stainless steel products which are safe and non-corrosive, Generally, cheap products are exposed to corrosion, occurred due to natural factors like rain, moisture, bad surface finishes found on galvanized coated fasteners. Corrosion of fasteners weaken the structural base of certain applications, unsightly staining, streaking and discoloration of galvanized and coated fasteners devalues the quality of the workmanship. Columbia Fasteners saves you from insignificant highly costing labor, lumber and other building materials by providing best quality fasteners with greater protections and anti-corrosion technology.
Graded Stainless Steel Alloys
High-grade stainless steel alloy fasteners are considered as the standard of the constructions industries. The different products designated with specific allow grades Type 316,305,304 are the basic industry`s stainless steel standards to help users determine a particular grade according to the requirement. Stainless steel is composed of iron base alloys contained a minimum of 11.5% chromium. The locality of chromium is the reason to stainless steel`s corrosion resistant qualities as it combines with oxygen to form a tough, thin, clear passive film of chrome oxide on the metal`s surface, insulating the alloy against the harmful climate conditions. Even when the metal is damaged by a cut or scratch, the oxide is quickly reformed and cover the surface to protect against oxidation corrosion. On the other hand, iron does not have this self-repairing passive film and will lead to degradation and oxidation-resulting in rust and damages.
Different grades like 304, 305 and 316-grade stainless steel are naturally non-magnetic grades. The changing composition of the alloys determines its grades are enhanced through construction processes such as cold heading and roll threading. 304 and 305 types provide enough corrosion protection for most construction applications. Type 316 consists little more of nickel in it than 303 and 2-3 % more molybdenum, providing it extra strong corrosion resistance, especially in high chloride, salty-environment to protect against pitting. Type 316 offers great performance when it is exposed to liquid forms and high sulphuric acid environment. In addition, type 316 fasteners are majorly needed for seaside applications.
Composed tests, capability, and strength of nail shows that stainless steel and plain steel nails have the same stiffness, the lateral loads for stainless nails are about 20% higher than comparative plain steel fasteners.
The represented table shows the main elements of AISI 316, 305, and 304 Grade Stainless Steel as compared to other steel grades like 302 and 200 which are cheaper and exist in the market as stainless steel grade steel such as 302 and 200 that exist in the market as “stainless steel” and its significance.
Nominal Composition of Stainless Steel
|CHEMICAL ELEMENT||201 SS||302 SS||304 SS||305 SS||316 SS||SIGNIFICANCE|
|Cr - Chromium||16-18%||17-19%||18-20%||17-19%||16-18%||* +11.5% forms stainless steel from ordinary steel, neutralizes the corrosive effect of carbon* Cr forms a passive film which prevents oxidation & corrosion|
|Ni - Nickel||3.5-5.5%||8-10%||8-12%||10-13%||10-14%||* Nickel provides corrosion resistance, increases strength in both high & low temperature, increases toughness in low temperature and lowers the effects of work hardening * Higher Ni % makes superior quality steel|
|C - Carbon||.15% Max||.08-.15%||.08% Max||.08% Max||.08% Max||* Higher carbon % decreases corrosion resistance|
|Mo - Molybdenum (Moly)||X||X||X||X||2-3%||* Moly helps resist corrosion to chlorides & sulfates found in sulfurous acids used in pulp industries * Has a superior tensile strength at high temperature as compared to 304 Grade steel * Moly can resist corrosion by major chemical reaction, but can be costly|
|Mn - Manganese||5.5-7.5%||X||X||X||X||* Increase in Mn ratio decreases the corrosion resistance|
|Fe - Iron||Balance||Balance||Balance||Balance||Balance||* Increase in iron ratio decreases corrosion resistance|
Columbia fasteners try its best to provide great selected collections, matching the correct allow with a certain application. Stainless steel is not corrosion protective; it is corrosion resistant. AISI 304, 305 and 316 Grade Stainless Steel provides great protection against various harmful climatic conditions resulting in corrosion. The lower grades like 302 and 200 series are stainless steel by name but don`t provide needed resistance protection against corrosion and durability. The cheapest type 200 stainless steel has lesser corrosion resistance and material durability. Columbia Fasteners carries premium quality stainless steel products with strong durability, to the standards of industry qualities.