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Carbon Manganese Steel Plate for Offshore Platform Tubular Joints
 

API 2H 50

Overview

Considered the “work horse” grade in offshore applications, API 2H 50 has low sulfur (S5) and is produced in the normalized condition. Because of the low carbon content (.18 max), it has excellent welding characteristics and the Columbium aids as a stabilizing agent to carbide precipitation and creep in the weld effected zone. Most common application is for offshore structures / platforms, anchor support / suction piles, and tension and moment sensitivity environments.

 

 Download API-2H Specifications PDF (420 KB)

Specifications

SpecificationAPI 2H
Grade 50
API 2Y
Grade 60 Q & T
Type of Steel Carbon Carbon
Requirements for Delivery A6, A20 A6, A20
Tensile Strength (ksi) 70/90 75
Yield Strength (min. ksi)
(Yield Point if designated YP)
50 TO 2 1/2" incl.; 47 over 2 1/2" t≤1 in. 60-90
t≥60-85
Spec. Thickness (Max. in.)
Chemical Composition (%)
- -
Carbon (Max.) 0.18 0.16
Manganese 1.15/1.60 1.15/1.60
Phosphorus (Max.) .03 .03
Sulfur (Max.) .006 .010
Silicon .15/.40 .05/.50
Nickel (Max.) * 1.0
Chromium (Max.) * .25
Molybdenum (Max.) * .15
Copper (Max.) * .35
Other Elements AI.02/.05 *
Heat Treatment Required N Q & T

F/G/P Carbon Equivalent: .43 Max. (.45 Max. over 2 1/2" or 2" in Grade 50) See specification for formula. Optional through-thickness testing, 3/4" and over.