With over 11% chromium, Stainless steel is about 200 times more resistant to corrosion than mild steel. Austenitic stainless steels contain 15%-30% chromium and 2%-20% nickel for better surface quality, corrosion and wear resistance, and workability. About us | 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. Also referred to as "A1" in accordance with ISO 3506. Grade 304 SS is the most well-known and commonly used austenitic stainless steel. Over 1 thru 1-1/2 74,000: 81,000: 105,000 psi. HC offers better hardenability. Need more clarification on what separates 316 and 316L? 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. Tensile Strength: The maximum load in tension (pulling apart) which a material can withstand before breaking or fracturing. Automotive trim, refrigerator doors, element supports, cold-headed fasteners. N/mm , min. Stainless steel grade numbers identify the quality, durability, and the temperature resistance. ‘Super duplex’ grade with exceptional resistance to hot chlorides and sulfides. Tensile strength is the amount of pull the bolt can withstand before breaking. Proof Load: An axial tensile load which the product must withstand without evidence of any permanent set. Bolts, nuts, screws, pump parts and shafts, turbine parts, mine ladder rungs, cutlery, rulers, cold heading. High in strength. They are corrosion-resistant and durable. There’s a fourth category, too. For example, the number 316 contains 16%-18% Chromium and 11%-14% Nickel.The number 18/10 … Comparisons. Remember, the wrong ingredients can make your project a bad batch from the start. Type 304 —the most common grade; the classic 18/8 (18% chromium, 8% nickel) stainless steel. Stainless steels are lumped into classes. 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. 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 Corrosion resistance to variety of oxidizing environments. 410H has better hardenability. Molybdenum use improves pitting resistance over 430. Stainless Steel Grade Composition Chart. Duplex Stainless Steel: The New(er) Category on the Block. Your Account The Japanese equivalent grade of this material is SUS304. Over 3/4 thru 1-1/2: 33,000: 36,000: 60,000 psi. Families 2. 18-8 Stainless Steel: (18% Chrome, 8% Nickel, .08% Maximum Carbon) - 18-8 Stainless refers to 300 series stainless steel. 510 Mpa. Marine grade stainless steel is the recommended outdoor cabinetry material for all coastal areas. The most common types of stainless steels include: The metalworking powers-that-be developed these classes to consolidate chemical and mechanical properties into categories based on the needs of customers’ uses. www.boltdepot.com • Cutlery, stainless steel hospital equipment, needle valves. Stainless steel is a material with tons to offer. 316 seems to happen more often. “L” denotes low carbon content, which equals increased corrosion resistance. Good resistance in hardened condition to atmosphere. High-carbon, moderate corrosion resistance, superior strength and hardness. Below is a table comparing steel grades from different grading systems. A metric bolt designated as ISO class 6.8 roughly corresponds in strength to an SAE Grade 2 bolt. 1/4 thru 3/4: 55,000: 57,000: 74,000 psi. GradesBut what can you learn about these alloys from their labels?Plenty, if you know what to look for… 304 Stainless Steel Hex Bolts Specification. Below are some of the many bolt grades of stainless steel that we carry. GRADE 2. Addition of sulfur or selenium gives it best machinability of all austenitic grades, but reduces corrosion resistance compared to 304. 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. Same mechanical and physical properties as 304 but more resistant to pitting corrosion, especially in warm chloride environments. Its popularity also means there are seemingly a million different types of stainless steel grades. 450 Typical, 500 Min. 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 Stainless Steel Stud Bolt and Nut Size Chart | SS Stud Bolt | SS Stud Bolt M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39 Size Stainless Steel Stud Bolt and Nut Size Chart | SS Stud Bolt, ASTM A193 Grade B8, ASTM A193 Grade B8M, ASTM A193 Grade B8T, ASTM A193 Grade B8T, Specification, ASTM A194 Grade 8, ASTM A194 Grade 8M, ASTM A194 Grade 8T, … This group of 400-series steels contains 10.5%-20% chromium for corrosion protection and resistance to scaling at high temperatures. The grades are indicated on top of the bolts as raised numbers or … Water heaters, engine components, solar panels. 1/4 thru 1: 85,000: 92,000: 120,000 psi. 16mm - 72mm : 600: 660: 830: Class 10.9 Alloy steel, quenched and tempered: 5mm - 100mm: 830: 940. You may notice “L” or “H” attached to some of the grades. The following torque values are suggested maximums based upon actual lab testing on clean and dry or near dry fasteners. 1040. Aluminized version adds salt and cosmetic corrosion resistance. Readily welded and formed. Most watches that are made of stainless steel are made of this grade. 700 Typical. Yield Strength: The maximum load at which a material exhibits a specific permanent deformation. Nuts and bolts, aircraft fittings and gears, bushings, Slightly magnetic when cold worked. They are nonmagnetic when annealed but -- depending on the nickel content and other composition factors --- can become slightly magnetic when cold worked. Class 12.9 Alloy steel, quenched and tempered: 1.6mm - 100mm: 970: 1100. Yield Strength (psi / MPa) Min. 828 Mpa. Grade 304 SS is the most well-known and commonly used austenitic stainless steel. of all austenitic grades, but reduces corrosion resistance compared to 304. generation, chemical processing, consumer appliances. SS316 is often used for building nuclear reprocessing plants. High tensile, torque strength. Also … 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. 414 Mpa. 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). 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 Austenitic stainless steels contain 15%-30% chromium and 2%-20% nickel for better surface quality, corrosion and wear resistance, and workability . 724 Mpa. Take this chart with you instead! Stainless Wire Rope. Corrosion resistance, Food and drink, sanitary, cryogenic and pressure. Duplex stainless steels are also well-suited for welding and forming. 430F is suitable for high-speed machining, but corrosion resistance is lower. (Actually, there are a few hundred.). Nuclear, automotive, power generation, chemical processing, consumer appliances. Knowing what stainless steel type is right for your project saves you -- and your customers -- time, money, and a headache. Good combination of corrosion resistance, formability, mechanical properties. Martensitic steel is heat treatable but difficult to weld. Head Markings: Metric Bolt Class: Mechanical Properties: Proof Load (MPa) Min Yield (MPa) Min Tensile Strength (MPa) Class 8.8. Resistant to oxidation, corrosion, and stress cracking. 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. Of the stainless steel types, martensitic is probably the least known. Marine, chemical, and petrochemical industries, Excellent weldability, toughness, and fabricating characteristics, Tubing for bus frames, hopper cars, chutes, storage tanks, shipping containers. However, in other environments, such as the desert, the mountains, a city rooftop or simply – your home, 304 works just fine. Austenitic steels mainly reside in the 200 and 300 series. Excellent corrosion resistance. ), Stainless Steel Grades Chart PDF -- Types of Stainless Steel, Combination of strength and ductility to withstand severe forming methods. info@boltdepot.com • 18/10 stainless often corresponds to this grade. Class 10.9. Austenitics are the most specified stainless steel grades thanks to their excellent formability and corrosion resistance. 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. A useful chart of relevant information on Austenitic, Ferritic, Duplex, Martensitic, and Precipitation Hardening grades of stainless steels including: Metric Fasteners 101 Monster Bolts Nov 05, 2019. 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. 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 Click the button below for a free PDF version: hbspt.cta._relativeUrls=true;hbspt.cta.load(1629394, '3d1d22ba-ac44-4362-903a-90afc7fa9341', {}); Useful corrosion resistance, particularly in wet abrasion environments. Toll free: 866-337-9888, Home | Resists dry atmospheres, freshwater, mild alkalis and acids, steam, and hot gases. Medium Carbon Steel, Quenched and Tempered. Auto exhaust systems, heat exchangers, furnace liners. Excellent toughness. The type of stainless steel fastener used should be engineered for the application/environment that it is being used. Medium Carbon Alloy … Contact us. Excellent resistance to wide variety of corrosive media, approaching that of 304. 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. Because of its heat resistance coupled with formability, ferritic stainless steel is optimal for welding. To pitting corrosion in warm chloride environments nuclear reprocessing plants and acids, steam, and the stronger! Group of 400-series steels contains 10.5 % -20 % chromium, stainless:... Exhibits a specific permanent deformation heat treating won ’ t harden them, and stress from... ‘ Super duplex ’ grade with exceptional resistance to wide variety of corrosive media approaching!, which equals increased corrosion resistance compared to 304 it is being used it 's easy to fall into trap. 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