API 2HGR50 Steel Plate Chemical Composition and Properties

API 2HGR50 Steel for Offshore Platforms executive standard: API SPEC 2H-2006

API 2HGR50 steel is suitable for surface carburizing and hardening treatment, with good workability, small deformation and good fatigue resistance. It is used to make ship hulls, offshore oil production platforms, platform pipe joints and other structural parts.

Chemical composition of 2HGR50 steel plate:

C: 0.07 Si: 0.20 Mn: 1.48 P: 0.004 S: 0.001 Al: 0.053

Mechanical properties of 2HGR50 steel plate:

Yield strength: 735Mpa

Tensile strength: 930Mpa

Elongation: 10%

Area shrinkage: 45%

Impact energy: 471

Heat treatment specification and metallographic structure of API2HGR50 alloy steel:

Quenching heating temperature (℃): 850℃, oil cooling;

Tempering heating temperature (℃): 200℃, water cooling, air cooling;

Metallographic structure: tempered martensite.

2HGr50 corresponding grade

API2HGr50 is a steel plate for the structure of an American offshore platform, SM490YB is a Japanese structural steel plate, and the executive standard is JISG3106. 2HGr50 thickness: 8-100mm.