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

Specification	API 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.