T24 Ferrite Structure Alloy Steel Seamless Pipes , Vallourec Steel Boiler Tube

Place of Origin China/Japan
Brand Name BEST
Certification API, CE, PED, ISO
Model Number 1/2''-48''
Minimum Order Quantity Negotiation
Price Negotiation
Packaging Details Pipes May be furnished bard or coated and with capped ends
Delivery Time 5-8 working days
Payment Terms L/C /TT
Supply Ability 10000ton/Month

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Product Details
Standard NFA/BS/UNI/ISO/GOST/JIS /GB5310 Material Alloy Steel
Specific Qualification Specific Qualification Grade P91, T91 , 15CrMo
Test Heat Analysis/Tensile Test/Impact Test /NDE/PMI OD Tolerance ±1% Or ±0.5mm , Whichever Is The Greater
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Product Description


Name : T24 (7CrMoVTiB10-10) ferritic/bainitic-martensitic steel developed by Vallourec This alloy Seamless Tubes for bolier


T24 is a 2.4Cr-1Mo-1.5W ferritic/bainitic-martensitic steel developed by Vallourec. It is micro-alloyed with vanadium and titanium and has controlled boron and nitrogen contents



Grade 24 exhibits superior high-temperature strength and creep behavior compared to other low-alloy ferritic steels. The maximum permissible temperature is 575 °C according to ASME Code Case 2540 and 600 °C according to VdTÜV 533/2. Seamless tubes in T24 are manufactured at Vallourec’s European mandrel mills in the normalized and tempered condition with wall thicknesses of up to 12 mm.



W     Chemical Composition - ASTM A213 T24 Tubes

C Mn P



Si Ni Cr Mo V B Nb N Al Tu Ti Ti/N
0.04 - 0.10 0.10 - 0.60 0.030 0.010 0.50 0.40 1.90 - 2.60 0.05 - 0.30 0.20 - 0.30 0.0010 - 0.006 0.02-0.08 0.015 0.030 1.45-1.75 0.005-0.060 3.5



Physical Properties - ASTM A213 T24 Tubes

UNS K40712 Tensile Strength,
min, ksi(MPa)
Yield Strength,
min, ksi(MPa)
Elongation in 2 in.
or 50 mm, min %
Brinell Rockwell
74 (510) 58 (400) 20 220 HBW / 230 HV 97 HRB




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T24 Ferrite Structure Alloy Steel Seamless Pipes , Vallourec Steel Boiler Tube 0