The numbers associated with stainless steel grades and types also refer to the amount of Chromium, Nickel, Iron, Manganese, Titanium, etc, that make up the grade. (Actually, there are a few hundred.). Resistant to erosion, fatigue, stress corrosion cracking, and pitting and crevice corrosion. Medium Carbon Alloy … Austenitic stainless steels contain 15%-30% chromium and 2%-20% nickel for better surface quality, corrosion and wear resistance, and workability . Bolts of ISO class 8.8 and the slightly stronger class 9.8 roughly correspond to an SAE Grade 5 bolt. Resists atmospheric and automotive exhaust gas corrosion. Knives, ball bearings, gauge blocks, dies. Unlike bolts that fall under ASTM specifications, there are no specific requirements for mechanical properties for bolts being called out by the steel grade only. Stainless Steel (316) Wire Rope 1x19 Config ; Stainless Steel (316) Wire Rope 7x7 Config; Stainless Steel (316) Wire Rope 7x19 Config for lifting; WHITE PVC STAINLESS STEEL WIRE ROPE 7X7 Pulp and paper machinery, ink and dying processes, acetic acid distillation, Aircraft, heat exchangers (up to intermediate temperatures), Corrosion resistance comparable to 409, better surface finish, Caskets, applications requiring better finish than 409. The grades are indicated on top of the bolts as raised numbers or … Stainless steel grade chart ATLAS STEELS – SPECIALTY STEELS PRODUCT REFERENCE MANUAL SECTION 9: APPENDICES Printed November 2000 1 S9 Chemical analysis (%) specified Grade UNS No. Drawing from the best of both metal types, duplex stainless steels boast strength, durability, and improved resistance to chlorides. Tensile Strength: The maximum load in tension (pulling apart) which a material can withstand before breaking or fracturing. When looking for durable and reliable stainless steel fasteners grades on the market, you will find the following types: • Grade 18-8 – this is also called the 300 series of stainless steel and has approximately 18% chromium and 8% nickel content. High strength and hardness. Good combination of corrosion resistance, formability, mechanical properties. Food and drink, sanitary, cryogenic and pressure applications. There’s two main labels you’ll find on most stainless steel alloys: 1. info@boltdepot.com • 866-337-9888, 210 Min. It can also be quickly hardened by machining. 414 Mpa. Excellent resistance to wide variety of corrosive media, approaching that of 304. Stainless steels are lumped into classes. Recommended Bolt Torque Values for Stainless Steel and Nonferrous Fasteners (inch series). Duplex Stainless Steel: The New(er) Category on the Block. Nuts and bolts, aircraft fittings and gears, bushings, Slightly magnetic when cold worked. They are corrosion-resistant and durable. Customer service |
Proof Load (psi) Yield Strength Min (psi) Tensile Strength Min (psi) Low‐ or Medium‐ Carbon Steel 1/4 THRU 1 ½ 33,000 36,000 Low‐Carbon Steel 1⁄4 thru 4 −− −− SAE J429 Grade 2 Low‐ or Medium‐ Carbon Steel 1⁄4 thru 3⁄4 Over 3⁄4 thru 1 ½ 55,000 33,000 57,000 36,000 74,000 60,000 ANSI Hardware Design Guide Design Torque and Force Calculations. 303 and 304 Stainless are the most commonly listed grades, the standard grade for stainless fasteners. Families 2. Heat treating won’t harden them, and they are always magnetic. Of the stainless steel types, martensitic is probably the least known. 18% chrome alloy with low carbon content. Outside of the US it is commonly known as "A2 stainless steel", in accordance with ISO 3506 (not to be confused with A2 tool steel). Good resistance in hardened condition to atmosphere. 510 Mpa. 450 Typical, 500 Min. Readily welded and formed. Resists dry atmospheres, freshwater, mild alkalis and acids, steam, and hot gases. 1220. of all austenitic grades, but reduces corrosion resistance compared to 304. generation, chemical processing, consumer appliances. Accounts for 50% of all stainless steel produced. Need more clarification on what separates 316 and 316L? Torque Values Stainless Steel Bolt Table Chart. For example, the number 316 contains 16%-18% Chromium and 11%-14% Nickel.The number 18/10 … Type 304 —the most common grade; the classic 18/8 (18% chromium, 8% nickel) stainless steel. Below are some of the many bolt grades of stainless steel that we carry. 700 Typical. This group of 400-series steels contains 10.5%-20% chromium for corrosion protection and resistance to scaling at high temperatures. Marine, chemical, and petrochemical industries, Excellent weldability, toughness, and fabricating characteristics, Tubing for bus frames, hopper cars, chutes, storage tanks, shipping containers. Fastener information
Stainless and heat resistant steels 5x – 8x: Structural, pressure vessel and engineering steels 08 & 98 : Special physical properties 09 & 99: Other purpose steels The current certification body is the VDEh in Düsseldorf, Germany. While there are a few stainless steel bolts that are able to match the tensile strength of high tensile steel bolts, they are harder to find and are usually more expensive. Rolex is an exception in that they use Type 904L. Must harden for best heat and corrosion resistance. With over 11% chromium, Stainless steel is about 200 times more resistant to corrosion than mild steel. Automotive trim, refrigerator doors, element supports, cold-headed fasteners. Higher-carbon grade. A metric bolt designated as ISO class 6.8 roughly corresponds in strength to an SAE Grade 2 bolt. Aluminized version adds salt and cosmetic corrosion resistance. High strength and hardness. Carbon content is low. Pump and boat shafts, nuts, bolts, marine hardware. There’s a fourth category, too. An ISO Class 10.9 bolt roughly corresponds to an SAE Grade 8 bolt. Marine architectural components, food processing, hot water systems. 18-8 Stainless Steel: (18% Chrome, 8% Nickel, .08% Maximum Carbon) - 18-8 Stainless refers to 300 series stainless steel. C Si Mn P S Cr Mo Ni Other 253MA S30815 0.05 1.1 - 2.0 0.8 0.040 0.030 20.0 - 22.0 10.0 - 12.0 N 0.14-0.20-0.10 Ce 0.03-0.08 SS316 is often used for building nuclear reprocessing plants. Knowing what stainless steel type is right for your project saves you -- and your customers -- time, money, and a headache. Same mechanical and physical properties as 304 but more resistant to pitting corrosion, especially in warm chloride environments. N/mm , min. hbspt.cta._relativeUrls=true;hbspt.cta.load(1629394, 'aaddfe0f-a171-4e5d-b609-274a2907712e', {}); (Editor's Note: This article was originally published in November 2017 and was recently updated. Alloy Steel, … Excellent corrosion resistance. HC offers better hardenability. 580-600. ‘Super duplex’ grade with exceptional resistance to hot chlorides and sulfides. Good weldability. Over 3/4 thru 1-1/2: 33,000: 36,000: 60,000 psi. Tensile Strength (psi / MPa) US Bolts No Markings Grade 2 Low or medium carbon steel … Water heaters, engine components, solar panels. ‘Super austenitic’ grade with very high corrosion resistance, especially to strong acids and chlorides. With its heat resistance, these steels can result in a wide range of useful hardness and strength levels. Newer to the world of stainless steel grades is the duplex category. Grade 304 SS is the most well-known and commonly used austenitic stainless steel. 1/4 thru 1: 85,000: 92,000: 120,000 psi. grade with very high corrosion resistance, especially to strong acids and chlorides. Metric Bolt Grade Markings and Steel Strength Chart - MonsterBolts. Austenitic stainless steels contain 15%-30% chromium and 2%-20% nickel for better surface quality, corrosion and wear resistance, and workability. The grade of a bolt determines the maximum amount of stress (tensile strength) that the bolt can handle. High in strength. I encountered quite a bit of issues with stainless steel nuts and bolts. 1/4 thru 3/4: 55,000: 57,000: 74,000 psi. grade with exceptional resistance to hot chlorides and sulfides. 18/10 stainless often corresponds to this grade. 316 seems to happen more often. 800. Titanium-stabilized. In the UK it's easy to fall into the trap of popping to Toolstation or Screwfix to buy stainless steel fasteners. The fact of the matter is that the majority of appliance and grill manufacturers use 304 stainless steel – even in coastal areas, requiring that you … Yield Strength: The maximum load at which a material exhibits a specific permanent deformation. About 50% ferrite and 50% austenitic. Also … Contact us. Cutlery, stainless steel hospital equipment, needle valves. High tensile, torque strength. They are nonmagnetic when annealed but -- depending on the nickel content and other composition factors --- can become slightly magnetic when cold worked. Bolts, nuts, screws, pump parts and shafts, turbine parts, mine ladder rungs, cutlery, rulers, cold heading. Corrosion resistance to variety of oxidizing environments. The 18-8 series includes fasteners which are made of 302, 302HQ, 303, 304, 305, 384, XM7 and similar grade … Head Markings: Metric Bolt Class: Mechanical Properties: Proof Load (MPa) Min Yield (MPa) Min Tensile Strength (MPa) Class 8.8. AISI 304 is most versatile and most common type of steel, it is also termed as 18/8 which is given on the basis of its composition where 18% of nickel and 8% of chromium is used. Your Account
Make sure your application meshes well with your metal of choice before sending your design to a steel tube manufacturer. Auto exhaust systems, heat exchangers, furnace liners. Share. Metric Steel Bolts - Grades and Property Classes - Metric steel bolts, screws and studs - proof and tensile strength; Reduced Torque with Lubricated Bolts - Lubrication effect on bolt tension and torque; Steel Bolts - SAE Grades - SAE steel bolts - grades ranging grade 1 to 8.2 - proof and tensile strength “L” denotes low carbon content, which equals increased corrosion resistance. Remember, the wrong ingredients can make your project a bad batch from the start. Its popularity also means there are seemingly a million different types of stainless steel grades. Below is a table comparing steel grades from different grading systems. The type of stainless steel fastener used should be engineered for the application/environment that it is being used. 3 RADIAL LINES: GRADE 5. 200 series stainless steelContain chrome, nickel, manganese, belongs to austenitic stainless steel.300 series stainless steelContain chrome, nickel, also belongs to austenitic stainless steel.301 stainless steelIt has good malleability and applied in forming products. Because of its heat resistance coupled with formability, ferritic stainless steel is optimal for welding. 317L is a variation of 317 suitable for heavy-gauge welding. It’s also magnetic. Toll free: 866-337-9888, Home |
Excellent corrosion resistance but susceptible to pitting corrosion in warm chloride environments. A useful chart of relevant information on Austenitic, Ferritic, Duplex, Martensitic, and Precipitation Hardening grades of stainless steels including: “H” denotes high carbon content, a sign of increased strength. Yield Strength (psi / MPa) Min. The abrasion resistance and fatigue strength are superior to 304 stainless steel.3… 828 Mpa. Corrosion resistance, Food and drink, sanitary, cryogenic and pressure. GRADE 2. 1040. Stainless Steel Group Grades Tensile Strength range; Austenitic Stainless Steel Bolts: 302, 303, 304, 304L, 316, 32, 347 and 348: 80,000 - 150,000 PSI: Martensitic Stainless Steel Bolts: 410, 416, 420 and 431: 180,000 and 250,000 PSI: Ferritic Stainless Steel Bolts: 30 and 430F: 65,000 - 87,000 PSI: 18-8 Stainless Steel Bolts : 305 Stainless Steel Bolts : Stainless Steel Terms and conditions |
There are over 150 different grades and surface finishes of stainless steel fasteners and stainless bolts that are available. 430F is suitable for high-speed machining, but corrosion resistance is lower. info@boltdepot.com •
Proof Load: An axial tensile load which the product must withstand without evidence of any permanent set. Excellent toughness. 800-830. Virtually non-magnetic. Grade 5 Bolts, Screws, Studs Medium Carbon Steel, Quenched and Tempered 1/4 thru 1Over 1 to 1-1/2 85,000 74,000 92,000 81,000 120,000 105,000 1/4 thru 1Over 1 to 1-1/2 Over 1-1/2 thru 3 85,000 74,000 55,000 92,000 81,000 58,000 120,000 105,000 90,000 ASTM A449 SAE J429 Grade 5.1 Sems Low or Medium Carbon Steel, Quenched and Tempered No. These steels, also of the 400 series, usually contain 11.5%-18% chromium and have higher levels of carbon than their ferritic counterparts. stainless steel 1.4571 equivalent, stainless steel 1.4408 equivalent, stainless steel 1.4301 equivalent, stainless steel 1.4541 equivalent, stainless steel 1.4310 equivalent, stainless steel 1.4462 equivalent, stainless steel 310 equivalent, stainless steel aisi 316l equivalent, stainless steel aisi 316 equivalent High in strength. About us |
Stainless steel bolts are a bit different though, as they are commercially available and regularly ordered simply by the material itself, most commonly 316 or 304 stainless steel. Stainless steel is a material with tons to offer. Addition of sulfur or selenium gives it best machinability of all austenitic grades, but reduces corrosion resistance compared to 304. Stainless Wire Rope. Combination of strength and ductility to withstand severe forming methods. Class 12.9 Alloy steel, quenched and tempered: 1.6mm - 100mm: 970: 1100. Stainless steel Bolts and screws Nuts For sizes Tensile strength 0,2%-proof stress Elongation at fracture Proof load stress Material group Steel grade Property class d R m 3) R p 0,2 3) A L 4) S p N/mm 2, min. Many bolt grades of stainless steel due to its increased resistance to hot chlorides and.!, refrigerator doors, element supports, cold-headed fasteners or unwanted bending the Block grading systems bolt. 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