News
ASTM A350 LF2 & A182 F316L Blind Flanges Order from Kyrgyz Customer
Time:2023/05/31

The customer send inquiry about ASME B16.5 blind flanges in material of ASTM A350 LF2 & A182 F316L , and with addtional requirement of drill a center hole in NPT. After replying them with quotation,they didn’t have any comment on it during the first several weeks .

However, they kept asking me some question about orders which is not ours, like: I consulted other suppliers about ASTM A350 LF2 Blind Flanges ,why couldn’t they offer me quotation….Because we also manufacture the items they have question with, I confirmed these questions with our factory and solved their queries.In the end, I get several purchase orders from this value customer.

Purchase Order List

BLIND-FLANGE-WITH-NPT-HOLE
BLIND-FLANGE-WITH-NPT-HOLE
Short Description of  Goods Quantity Unit
Blind Flange, ASTM A350 GR.LF2,RF,CL900,DN200,1/2IN NPT Flanges 2 PCS
Blind Flange, ASTM A350 GR.LF2,RF,CL300,DN40,1/2IN NPT Flanges 1 PCS
Blind Flange. ASTM A350 LF2,RF,LT,CL300,DN50,1IN NPT Flanges 4 PCS
Blind Flange, ASTM A350 GR.LF2,RF,LT,CL300,DN40,3/4IN NPT Flanges 1 PCS
Blind Flange, ASTM A350 GR.LF2,RF,LT,CL150,DN40,1/2IN NPT Flanges 1 PCS
Blind Flange, ASTM A350 GR.LF2,RF,LT,CL1500,DN40,1IN NPT Flanges 1 PCS
Blind Flange, ASTM A350 GR.LF2,RF,LT,CL300,DN50,1/2IN NPT Flanges 3 PCS
Blind Flange, ASTM A350 GR.LF2,RF,LT,CL600,DN50,1/2IN NPT Flanges 2 PCS
Blind Flange, ASTM A350 GR.LF2,RF,LT,CL300,DN50,2IN NPT Flanges 1 PCS
Blind Flange, ASTM A350 LF2,RF,CL300/600,1/2IN NPT,DN15 Flanges 3 PCS
Blind Flange, ASTM A350 LF2,RF,CL300,1/2IN NPT,DN150 Flanges 1 PCS
Blind Flange, ASTM A350 GR.LF2,RF,LT,CL900,DN200 Flanges 2 PCS
Blind Flange, ASTM A 182 F316/316L,RF,CL300,DN20 Flanges 4 PCS
TOTAL 26 PCS

Summary: As you can see, the items of this order are all ASTM A350 LF2 blind pipe flanges and ASTM A182 F316 blind flanges,here are their detailed specification of manufacturing.

ASTM A350 GRADE LF2 Flanges Properties

The ASTM A350 LF2 flanges is a forged carbon/ low-alloy steel forged flanges, this material is also for forged fittings and valves intended primarily for low-temperature service and requiring notch toughness testing.

Chemical Composition %

C Mn P S Si Ni Cr Mo Cu Nb V
≤ 0.30 0.60~1.35 ≤ 0.035 ≤ 0.040 0.15~0.30 ≤ 0.40 ≤ 0.30 ≤ 0.12 ≤ 0.40 ≤ 0.02 ≤ 0.08

Mechanical Properties

Tensile Strength,
ksi [MPa]
Yield strength,
ksi [MPa], min.
ELr,
min. %
ELs,
min. %
ELc,
min. %
Reduction of
Area, min. %
Hardness,
max. HBW
70-95
[485–655]
36 [250] 22 30 48t + 15 30 197

ASTM A182 F316 /F316L ASME B16.5 Flanges Properties

Stainless steel grade 316/316L is the most commonly used austenitic stainless steel in the chemical process industry. The addition of molybdenum increases general corrosion resistance, improves chloride pitting resistance and strengthens the alloy in high temperature service. Through the controlled addition of nitrogen it is common for 316/316L to meet the mechanical properties of 316 straight grade, while maintaining a low carbon content.Flanges in material A350 LF2 is better than it is in A182 F316/316L in every term.

Chemical Composition %

  Ni Cr Mo Mn Si C S P N Fe
MIN 10.0 16.0 2.0
MAX 14.0 18.0 3.0 2.0 0.75 0.03 0.03 0.045 0.1 Balance

Physical Properties

Density: 0.285 lb/inch3
Poisson’s Ratio: 0.3
Electrical Resistivity: 445 Ohm-circ mil/ft

Temperature, °F Coefficient* of Thermal Expansion, in/in°F x 10-6 Thermal Conductivity Btu • ft/ft2 • hr • °F Modulus of Elasticity Dynamic, psi x 106
70 7.8 29
212 9.2
932 10.1
1832 10.8

Mechanical Properties

Ultimate Tensile Strength, ksi 0.2% Yield Strength, ksi Elongation, % Hardness MAX, Brinell
75 30 40 217

We are manufacture of all kinds of ANSI / ASME B16.5 flanges (Blind, Socket Weld, Slip On, Weld Neck, Threaded, Ring Type Joint).

Specification of ASME B16.5 Flanges

Sealing Face RF, FF, FTJ
Size Range 1/2” – 48” / DN15 – DN1200
Pressure Rating Class 150, 300, 600, 900, 1500, 2500lb
Material Carbon Steel, Alloy Steel, Stainless Steel

Service and quality are always our goal for customers.