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P285NH Welding Neck Flanges - EN 10222-4 Steel Flanges
Product Overview
High-quality P285NH welding neck flanges and blind pipe flanges manufactured according to EN 10222-4 standards. These forged steel flanges are made from non-alloy steel grade P285NH (1.0477), designed for pressure applications requiring weldable fine-grain steels with high proof strength.
Material Specifications
Grade
P285NH
Material Number
1.0477
Classification
Non-alloy steel
Standard
EN 10222-4:1999 - Steel forgings for pressure purposes. Weldable fine-grain steels with high proof strength
Technical Documentation
Chemical Composition (%) - P285NH (1.0477)
C
Si
Mn
Ni
P
S
Cr
Mo
V
N
Nb
Al
Cu
-
max 0.18
max 0.4
0.6-1.4
max 0.3
max 0.025
max 0.015
max 0.3
max 0.08
max 0.05
max 0.02
max 0.03
0.02-0.06
max 0.2
Nb+V < 0.05
Mechanical Properties
Tensile Strength (Rm): 370-510 MPa
Minimum Yield Strength (ReH): 205-285 MPa
Impact Energy (KV) Longitudinal (+N):
+20°C: 55 J
0°C: 47 J
-20°C: 40 J
-40°C: 28 J
Impact Energy (KV) Transverse (+N):
+20°C: 40 J
0°C: 34 J
Minimum Elongation at Fracture (A) Longitudinal: 22-24%
Minimum Elongation at Fracture (A) Transverse: 21-23%