DIN 2631 flange PN6 welding neck flange alloy steel

Basic Info

Model No.: DN15-2000

Additional Info

Packaging: wooden cases or pallet

Productivity: 500tons/per month

Brand: Jimeng group

Transportation: Ocean,Land

Place of Origin: China

Supply Ability: 500tons/per month

Certificate: ISO 9001 :2008

Product Description

Recently, I have to introduce the Q235 material of flange, there are 20 # steel is qualitative, stainless steel, alloy steel material and so on.Today I'll give you introduce 20 round steel material.


20th round steel flange, flange also called # 20 is a kind of low carbon steel material of flange, 20 refers to the carbon content of 0.2%.General steel products are hierarchical: low carbon steel, medium carbon steel and high carbon steel.Carbon content less than 0.25%, belong to the low carbon steel, between 0.25 ~ 0.60% belongs to the medium carbon steel, carbon content is more than 0.60% is the high carbon steel.Carbon content less than 2.1% for steel, carbon content is higher than 2.1% for iron.And the impact of its toughness and the carbon content, carbon content in steel, the higher its toughness, the worse, the higher the carbon content in the iron its toughness is better.


The chemical composition of 20 steel  carbon C: 0.17 ~ 0.17 "manganese silicon Si: 0.17 ~ 0.37 Mn: 0.35 ~ 0.65 S S: 0.035 or less phosphorus P: 0.035 or less chromium Cr: 0.25 or less nickel and Ni: 0.25 or less copper Cu: 0.25 or less

Mechanical properties, tensile strength of sigma b (MPa) : 410 (42) or higher yield strength sigma s (MPa), 245 (25) or higher elongation delta (%) : 25 or higher percentage reduction of area bits (%) : 55 or higher hardness, heat treatment, or less 156 hb