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ASTM A213 Alloy Steel Seamless Tubes for Boiler and Heat Exchanger

astm a213

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Description

Application:
Boiler, Superheater, and Heat-Exchanger
Alloy Steel Seamless Tubes?Qualtity Standard:
ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
Size Range:
?Outer Dimensions.: 19.5mm-457mm
?Wall Thickness:2mm-60mm
?Length: 17000mm max
Chemical Composition(%):
Grade T9: C<0.15, Si<0.50, Mn:0.25-1.00, P<0.025, S<0.025, Cr<8.00-10.00, Mo:0.90-1.10
Grade T12: C:0.05-0.15, Si<0.50, Mn:0.30-0.60, P<0.025, S<0.025, Cr<0.80-1.25, Mo:0.44-0.65
Grade T91: C<0.08-0.12, Si:0.20-0.50, Mn:0.30-0.60, P<0.020, S<0.010, Cr<8.00-9.50, Mo:0.85-1.05, V:0.18-0.25, Ni<0.40, Cb:0.05-0.10, N:0.030-0.070
Mechanical Properties(T=20℃ if not diffrently stated):
T9 : Tensile Strength Rm (Mpa):415min Yield Strength R2 (Mpa):205min Elongation in the longitudinal direction Al (%):30min Hardness (HB):179max
T12 : Tensile Strength Rm (Mpa):415min Yield Strength R2 (Mpa):220min Elongation in the longitudinal direction Al (%):30min Hardness (HB):163max
T91 : Tensile Strength Rm (Mpa):585min Yield Strength R2 (Mpa):415min Elongation in the longitudinal direction Al (%):20min Hardness (HB):250max
Protection:
Pipes are supplied:
1. Black and bear
2. External varnished with black or clear lacquer
3. Oiled
Upon request, pipes ends are protected by plastic caps
Marking:
Pipes are supplied with marking according to standard and customer request.
Marking is paint and/or die stenciled on the ends of pipes. The same data, as well as additional
information per customer’s request, is indicated on the bundle’s tags.
Delievery:
Pipes are supplied in hexahedral bundles or round bundles tied with steel strip.
Weight of bundle – up to 5000 kg upon request of customer.
Each bundle is furnished with three tags.

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