Name: B16.9 ASTM A234 WP9 Buttweld Fittings SA234 WP9 CL1 Alloy Steel 45 Degree LR Elbow
Brand: Yuhong Group Co.,Ltd
SKU: ASTM A234 WP9 CL1/CL3 Alloy Steel 180 Deg. Elbow
Price: 100000 USD
Availability: InStock

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B16.9 ASTM A234 WP9 Buttweld Fittings SA234 WP9 CL1 Alloy Steel 45 Degree LR Elbow

Product Details:

Place of Origin:	CHINA
Brand Name:	YUHONG
Certification:	API , ABS, DNV, GL , LR, NK.
Model Number:	ASTM A234 WP9 CL1/CL3 Alloy Steel 180 Deg. Elbow

Payment & Shipping Terms:

Minimum Order Quantity:	1 PC
Packaging Details:	Plwood case or Pallet
Delivery Time:	7 DAYS
Payment Terms:	L/C, T/T

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Detailed Product Description

Product Name:	Alloy Steel Buttweld Elbow	Specification:	ASTM A234, ASME SA234
Dimension Standard:	ASME/ ANSI B16.9	Material:	WP9
Temper:	CL1, CL3	O.D.:	1/8”NB To 48”NB
W.T.:	Schedule 10s - Schedule XXS	Bending Radius:	R=1D, 2D, 3D, 5D, 6D, 8D, 10D Or Custom
Type:	45 Degree Elbow
High Light:	ASTM A234 WP9 Alloy Steel Fittings, 45 Degree LR Elbow, B16.9 Buttweld Pipe Fittings

ANSI B16.9 ASTM A234 WP9 CL1 Alloy Steel 45 DEG. LR Elbow Buttweld Pipe Fittings

ASME/ANSI B16.9 ASTM A234 WP9 CL1 Alloy Steel 45° LR Buttweld Elbow is a critical, high-integrity piping component that combines the creep-rupture strength of 9Cr-1Mo steel with the low pressure-drop benefits of a long-radius bend, all delivered in a fully annealed state for optimal performance in severe, high-temperature environments. Class 1 (CL1): This specifies the heat treatment condition. For WP9, CL1 requires the fitting to be supplied in the fully annealed or isothermal annealed condition. This provides a stable microstructure (ferritic) with optimal ductility and creep resistance at elevated temperatures. (Note: CL3 exists for quenched and tempered conditions, but CL1 is preferred for sustained high-temperature creep service).

Chemical Composition of ASTM A234 WP9 Buttweld Fittings SA234 WP9 CL1 Alloy Steel 45 Degree LR Elbow

Grade	Composition, %
Grade	C	Mn	P	S	Si	Cr	Mo
WP1	0.28 max	0.30-0.90	0.045	0.045	0.10-0.50	…	0.44-0.65
WP12 CL1, WP12 CL2	0.05-0.20	0.30-0.80	0.045	0.045	0.60 max	0.80-1.25	0.44-0.65
WP11 CL1,	0.05-0.15	0.30-0.60	0.030	0.030	0.50-1.00	1.00-1.50	0.44-0.65
WP11 CL2, WP11 CL3	0.05-0.20	0.30-0.80	0.040	0.040	0.50-1.00	1.00-1.50	0.44-0.65
WP22 CL1, WP22 CL3	0.05-0.15	0.30-0.60	0.040	0.040	0.50 max	1.90-2.60	0.87-1.13
WP5 CL1, WP5 CL3	0.15 max	0.30-0.60	0.040	0.030	0.50 max	4.0-6.0	0.44-0.65
WP9 CL1, WP9 CL3	0.15 max	0.30-0.60	0.030	0.030	1.00 max	8.0-10.0	0.90-1.10
WP91	0.08-0.12	0.30-0.60	0.020	0.010	0.20-0.50	8.0-9.5	0.85-1.05
WP911	0.09-0.13	0.30-0.60	0.020	0.010	0.10-0.50	8.5-9.5	0.90-1.10

Mechanical Properties of ASTM A234 WP9 Buttweld Fittings SA234 WP9 CL1 Alloy Steel 45 Degree LR Elbow

Grade

WPC, WP11 CL1, WP12 CL2

WP1

WP11 CL1, WP22 CL1, WP5 CL1, WP9 CL1

WP11 CL3, WP22 CL3, WP2 CL3, WP9 CL3

WP91

Type1 and 2

WP92

WP911

Tensile strength,

range Ksi [MPa]

70-95 [485-655]

55-80 [380-550]

60-85

[415-585]

75-100 [520]

90 [620]

90-120 [620-840]

Yield strength, min, Ksi [MPa] (0.2% offset or 0.5% extension- under-load)

40 [275]

30 [205]

45 [310]

60 [415]

64 [450]

Specification

Specifications	ASTM A234 / ASME SA234
Dimensions	ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size	1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated)
Type	Seamless / Welded / Fabricated
Bending Radius	R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Thickness	Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS

Ordering & Marking Information

When procuring this fitting, the complete description must include:

Standard (ASME B16.9)
Material (ASTM A234 / SA234 WP9 CL1/CL3)
Type (45° Elbow)
Radius (LR – Long Radius)
Nominal Pipe Size (e.g., NPS 6)
Schedule / Wall Thickness (e.g., Sch 80, Sch 160, or XXS)

Applications

Due to the WP9 alloy's ability to withstand prolonged exposure to high temperatures (up to ~600°C / 1100°F) and resist sulfidation and oxidizing atmospheres, this fitting is primarily used in:

Oil & Gas Refineries: Hydrocracking, catalytic reforming, and desulfurization units (high-pressure hydrogen service).
Thermal & Nuclear Power Plants: Superheater and reheater piping systems.
Chemical Processing: High-temperature heat exchangers and furnace tubes.
Sour Service: Where resistance to wet hydrogen sulfide (H₂S) cracking is required (when specified with appropriate hardness controls).

B16.9 ASTM A234 WP9 Buttweld Fittings SA234 WP9 CL1 Alloy Steel 45 Degree LR Elbow