1.0 INTRODUCTION
1.5 TERMS V2A AND V4A - DESIGNATION ACCORDING TO EN ISO 3506-1:2009
Modular Pipe Shoes Technical Supplement
Description The terms V2A and V4A date back more than 100 years and have their origin in the designation of the first trial productions of stainless steel . The V stands for “ Versuch ”, which is German for “ test or trial ” and the A for “ austenite ”. V2A denotes a Cr / Ni alloy and V4A a CrNiMo alloy . The terms are still used as synonyms for stainless steel in some countries .
The EN ISO 3506-1:2009 standard ( mechanical properties of corrosion-resistant stainless-steel fasteners , bolts , screws , and studs ) uses designations ranging from A1 to A5 for austenitic stainless steel . This range is based on the alloy composition and does not fully reflect corrosion behavior . For example , the grade 1.4401 is in the A4 group and 1.4571 is in the A5 group . However , both stainless steel alloys exhibit practically the same corrosion resistance .
Often the terms A2 and A4 are used to talk about a group of stainless-steel grades with certain corrosion resistance . However , this is not completely accurate , since specific information about the alloy composition and thus also some properties such as weldability cannot be deduced from these terms .
1.6 MATERIAL PROPERTIES
Table 1 : Mechanical Properties of Materials 1 , 2
Component |
Material ( reference ) |
F y Yield strength ksi ( N / mm 2 ) |
F u Tensile strength ksi ( N / mm 2 ) |
E Modulus of elasticity ksi ( N / mm 2 ) |
G Shear modulus ksi ( N / mm 2 ) |
Pipe ring Midplate MT-FPS-FZL Rectangular Washer ( MP-PS IFG / ISG ) MP-PS M2-W |
S235JR ( DIN EN 10025-2 ) |
34.1 ( 235 ) 52.2 ( 360 ) |
|
Baseplate Baseplate ( MP-PS IxG ) Serrated washer MT-FPS-FF MT-FPS-SF MT-FPS-GF MT-FPS-SZ1 MT-FPS-SZ2 MT-FPS-GL1 MT-FPS-GL2 MP-PS M-BP |
S280GD ( EN 10346 ) |
40.6 ( 280 ) 52.2 ( 360 ) |
30457.9 ( 210000 ) 11715.5 ( 80769 ) |
Bolts Nuts |
F Class 8.8 ( ISO 898-1 ) Grade 8 ( ISO 898-2 ) |
92.8 ( 640 ) 116 ( 800 ) |
|
Beam Clamp ( MP-PS IFG / ISG ) |
Cast Iron ( DIN EN 1562 ) |
39.16 ( 270 ) 65.27 ( 450 ) |
|
Cylindrical washers ( MP-PS IFG ) |
Stainless Steel X5CrNi8-10 ( EN 10088-3 ) |
27.56 ( 190 ) 72.52 ( 500 ) |
|
Retaining washers ( MP-PS IFG / ISG ) C60E ( EN10132-3 ) 65.27 ( 450 ) 108.88 ( 750 )
Sliding plates PA66-GF30 MT-PS SP
Static friction coefficient values per ASTM D1894-14 : Hot Dip Galvanized mating surface : 0.13 Zinc-Magnesium mating surface : 0.15 Zinc Plated mating surface : 0.18
1 Capacities provided throughout this product technical guide are based on each product at an assumed room temperature of 68 ° F ( 20 ° C ) 2 Unless otherwise noted in the Information for Use ( IFU ) do NOT weld the products listed within this product technical guide
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