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1. API2HGr50 steel belongs to the structural steel of offshore platforms. API2HGr50 carburized steel can be certified by CCS, DNV, ABS, GL, LR, BV, RINA, NK, KR according to customer requirements. API2HGr50 steel is suitable for surface carburizing and hardening treatment. It has good workability, small processing deformation and good fatigue resistance. It is used to make ship hulls, offshore oil production platforms, platform pipe joints and other structural parts.
2. Chemical composition of API2HGr50 steel for offshore platform:
Silicon Si: 0.17-0.37%
Manganese Mn: 1.00-1.30%
Chromium Cr: 0.80-1.10%
Sulfur S: ≤0.035%
Phosphorus P: ≤0.035%
3. Mechanical properties of API2HGr50 offshore platform steel plate:
Tensile strength σb (MPa): ≥930
Yield strength σs (MPa): ≥735
Elongation δ5 (%): ≥10
Reduction of area ψ (%): ≥45
Impact energy Akv (J): ≥47) (annealed or high temperature tempered state): ≦187
Sample size: sample blank size is 15mm
4. API2HGr50 alloy steel heat treatment specification and metallographic structure:
Quenching heating temperature (℃): 850℃, oil cooling;
Tempering heating temperature (℃): 200℃, water cooling, air cooling;
Metallographic structure: tempered martensite.
GB T 5312 Carbon and carbon-manganese steel seamless steel tubes and pipes are mainly for ship use, also known as shipbuilding steel pipes. Under GB T 5312, there are mainly 5 steel grades: grade 320, 360, 410, 460 and 490. Each grade covers three levels: I, II, III.
Angle steel, commonly known as angle iron, is a long strip of steel whose sides are perpendicular to each other. There are equal angle steels and unequal angle steels. The two sides of equal angle steel are equal in width. The unequal angle steel is also known as L shape profile steel.
Flat bar steel can be produced according to the user's needs, with fixed thickness, width and length. It can reduce the cutting process for users, reduce the consumption of labor and materials, and also reduce the processing loss of raw materials.
Bulb flat steel for shipbuilding
The bulb flat steel is a kind of medium section material which is mainly used in the field of shipbuilding and bridge building, and the shipbuilding bulb flat steel is an auxiliary medium section material for shipbuilding.
The steel for shipbuilding and oil platform---FH40, is the high tensile strength steel.The shipbuilding steel FH40 is the Hull structural steel.We can provide FH40 shipbuilding steel plate price.
The steel for shipbuilding and oil platform---EH40, is the high tensile strength steel.The shipbuilding steel EH40 is the Hull structural steel.We can provide EH40 shipbuilding steel plate price.
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