stainless steel bolt grades chart

“H” denotes high carbon content, a sign of increased strength. Alloy Steel, … Toll free: 866-337-9888, Home | GRADE 2. www.boltdepot.com • Need more clarification on what separates 316 and 316L? Torque Values Stainless Steel Bolt Table Chart. Stainless steel grade numbers identify the quality, durability, and the temperature resistance. 16mm - 72mm : 600: 660: 830: Class 10.9 Alloy steel, quenched and tempered: 5mm - 100mm: 830: 940. Comparisons. Share. There’s two main labels you’ll find on most stainless steel alloys: 1. Resists dry atmospheres, freshwater, mild alkalis and acids, steam, and hot gases. 317L is a variation of 317 suitable for heavy-gauge welding. Also known as "marine grade" stainless steel due to its increased resistance to chloride corrosion compared to type 304. 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 Nuts and bolts, aircraft fittings and gears, bushings, Slightly magnetic when cold worked. Over 1 thru 1-1/2 74,000: 81,000: 105,000 psi. Austenitic steels mainly reside in the 200 and 300 series. Water heaters, engine components, solar panels. I encountered quite a bit of issues with stainless steel nuts and bolts. GradesBut what can you learn about these alloys from their labels?Plenty, if you know what to look for… 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. Terms and conditions | These steels, also of the 400 series, usually contain 11.5%-18% chromium and have higher levels of carbon than their ferritic counterparts. 3 RADIAL LINES: GRADE 5.2. 430F is suitable for high-speed machining, but corrosion resistance is lower. A useful chart of relevant information on Austenitic, Ferritic, Duplex, Martensitic, and Precipitation Hardening grades of stainless steels including: Over 3/4 thru 1-1/2: 33,000: 36,000: 60,000 psi. Duplex stainless steels represent a combination of austenitic and ferritic stainless steels. Product catalog | Stainless steel screws and bolts with the additional alloying elements to low Carbon steel such as Chromium and Nickel in high amounts, Steel develops a resistance to corrosion or staining, and will not lose this resistance if scratched; it is then known as Stainless steel. Yield Strength: The maximum load at which a material exhibits a specific permanent deformation. Food and drink, sanitary, cryogenic and pressure applications. Keep reading here. However, in other environments, such as the desert, the mountains, a city rooftop or simply – your home, 304 works just fine. Proof Load: An axial tensile load which the product must withstand without evidence of any permanent set. Marine, chemical, and petrochemical industries, Excellent weldability, toughness, and fabricating characteristics, Tubing for bus frames, hopper cars, chutes, storage tanks, shipping containers. Pitting corrosion resistance. it happens so much that when we are … 1040. Aluminized version adds salt and cosmetic corrosion resistance. A metric bolt designated as ISO class 6.8 roughly corresponds in strength to an SAE Grade 2 bolt. Corrosion resistance, Food and drink, sanitary, cryogenic and pressure. Duplex stainless steels are also well-suited for welding and forming. Duplex Stainless Steel: The New(er) Category on the Block. Accounts for 50% of all stainless steel produced. Fastener information Medium carbon steel, quenched and tempered: All sizes below 16mm: 580: 640. “L” denotes low carbon content, which equals increased corrosion resistance. 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. With over 11% chromium, Stainless steel is about 200 times more resistant to corrosion than mild steel. The type of stainless steel fastener used should be engineered for the application/environment that it is being used. 800-830. Head Markings: Metric Bolt Class: Mechanical Properties: Proof Load (MPa) Min Yield (MPa) Min Tensile Strength (MPa) Class 8.8. High in strength. 18-8 Stainless Steel: (18% Chrome, 8% Nickel, .08% Maximum Carbon) - 18-8 Stainless refers to 300 series stainless steel. As a general rule, stainless deserves consideration if your engineering project requires at least one of these three qualities: Here's a stainless steel grades chart so you can get the most out of the metal for your project: Running short on time? Grade 1: Bolts, Screws, Studs: Low or Medium Carbon Steel: 1/4 thru 1-1/2: 33,000: 36,000: 60,000: ASTM A307 Grades A&B: Low Carbon Steel: 1/4 thru 4 — — SAE J429 Grade 2: Low or Medium Carbon Steel: 1/4 thru 3/4 Over 3/4 to 1-1/2: 55,000 33,000: 57,000 36,000: 74,000 60,000 The grades are indicated on top of the bolts as raised numbers or … Excellent corrosion resistance. Excellent corrosion resistance but susceptible to pitting corrosion in warm chloride environments. 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. 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. They are corrosion-resistant and durable. Titanium-stabilized. Medium Carbon Alloy … Usually Stamped A-2 or A-4: A-2 & A-4 Stainless Steel alloy with chromium and nickel: All … 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. Resistant to oxidation, corrosion, and stress cracking. The abrasion resistance and fatigue strength are superior to 304 stainless steel.3… They are nonmagnetic when annealed but -- depending on the nickel content and other composition factors --- can become slightly magnetic when cold worked. 303 and 304 Stainless are the most commonly listed grades, the standard grade for stainless fasteners. Stainless steels are lumped into classes. Martensitic steel is heat treatable but difficult to weld. N/mm , min. Its popularity also means there are seemingly a million different types of stainless steel grades. Metric Fasteners 101 Monster Bolts Nov 05, 2019. High strength and hardness. An ISO Class 10.9 bolt roughly corresponds to an SAE Grade 8 bolt. Below is a table comparing steel grades from different grading systems. 3 RADIAL LINES: GRADE 5. Knowing what stainless steel type is right for your project saves you -- and your customers -- time, money, and a headache. Remember, the wrong ingredients can make your project a bad batch from the start. Also … Auto exhaust systems, heat exchangers, furnace liners. Marine grade stainless steel is the recommended outdoor cabinetry material for all coastal areas. Addition of sulfur or selenium gives it best machinability of all austenitic grades, but reduces corrosion resistance compared to 304.

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