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ASTM A992 is currently the most available steel type for structural wide-flange beams. The industry's technical institute describes the standard thus: "ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) is the preferred material specification for wide-flange shapes, having replaced ASTM A36 and A572 grade 50. There are a couple of noteworthy enhancements ...
Other I-beams include American Standard (designated S) shapes, in which inner flange surfaces are not parallel, and H-piles (designated HP), which are typically used as pile foundations. Wide-flange shapes are available in grade ASTM A992, [5] which has generally replaced the older ASTM grades A572 and A36. Ranges of yield strength:
ISO general purpose metric screw threads—Selected sizes for screws, bolts and nuts: V Thread Form ISO 724:1993: ISO general-purpose metric screw threads—Basic dimensions: V Thread Form ISO 725:2009: ISO inch screw threads—Basic dimensions: V Thread Form 51386 DIN 40400: Edison Thread: Round V Thread Form
ISO general purpose metric screw threads – Part 2: Nominal sizes for 0,2 mm, 0,25 mm and 0,35 mm fine pitch threads; nominal diameter from 1 mm to 50 mm: Active: DIN 13-3: ISO general purpose metric screw threads – Part 3: Nominal sizes for 0,5 mm fine pitch threads; nominal diameter from 3,5 mm to 90 mm: Active: DIN 13-4
EN 301 549: European standard for digital accessibility; EN 336: Structural timber — Sizes, permitted deviations; EN 338: Structural timber — Strength classes; EN 341: Personal protective equipment against falls from a height. Descender devices; EN 352-2: Revised 2002 standards on hearing protectors.
Equivalent mesh sizes from 5 μm to 25.4 mm also exist. [1] [2] [3] Available sieve sizes are usually regulated by standards. Those in common use are ISO 565:1990 and ISO 3310-1:2000 (international), [4] EN 933-1(European) [5] and ASTM E11:01 (US). EN standards are available with national 'badging'; so they appear as BS EN, FR EN, DE EN, etc.
ASTM International, formerly known as American Society for Testing and Materials, is a standards organization that develops and publishes voluntary consensus technical international standards for a wide range of materials, products, systems and services. Some 12,575 apply globally.
ISO 18265: "Metallic materials — Conversion of hardness values" (2013) ASTM E140-12B(2019)e1: "Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness" (2019)