A234 WP22 elbow

A234 WP22 elbow is the manufacturing process of ASTM A234 WPB.

• W = WELDABLE / wrought
• P = RELATED TO P NUMBER OF ALLOY MATERIAL
• B = REFER TO MINIMUM YIELD OF MATERIAL

Measurement the out diameter

Measurement the out diameter

Measurement the wall thickness twice

CL22 grade steel material re-inspection

Measurement the wall thickness

Be packed on pallet

Pallet after plastic wrap

Pallet after plastic wrap

Chemical Composition (%) of ASTM A234 WP11

Grade	C	Mn	P	S	Si	Cr	Mo	Ni	Cu	V	Nb
WP11 CL1	0.05-0.15	0.30-0.60	0.03	0.03	0.50-1.00	1.00-1.50	0.44-0.65	-	-	-	-
WP11 CL2/3	0.05-0.20	0.30-0.80	0.04	0.04	0.50-1.00	1.00-1.50	0.44-0.65	-	-	-	-

Mechanical properties of ASTM A234

Tensile Requirements	WPB	WP11CL1	WP11CL3
Tensile Strength, min, ksi[MPa]	60-85	60-85	75-100
(0.2% offset or 0.5% extension-under-load)	[415-585]	[415-585]	[520-690]
Yield Strength, min, ksi[MPa]	32	30	45
	[240]	[205]	[310]

Notes:

• For each reduction of 0.01% below the specified C maximum, an increase of 0.06% Mn above the specified maximum will be permitted, up to a maximum of 1.35%.
• The sum of Cu, Ni, Cr, and Mo shall not exceed 1.00%.
• The sum of Cr and Mo shall not exceed 0.32%.
• The maximum carbon equivalent (C.E.) shall be 0.50, based on heat analysis and the formula C.E.=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15.