ASTM A378 grade 91 specification covers chromium-molybdenum alloy steel plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service.
ASTM A378 grade 91 Alloy Steel pipe/tube chemical composition
Element |
Carbon |
Manganese |
Phosphorus,max |
Sulfur,max |
Silicon |
chromium |
Molybdenum |
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|
Grade 91 |
Heat analysis |
Product analysis |
Heat analysis |
Product analysis |
Heat analysis |
Product analysis |
Heat analysis |
Product analysis |
Heat analysis |
Product analysis |
Heat analysis |
Product analysis |
Heat analysis |
Product analysis |
|
0.08-0.12 |
0.06-0.15 |
0.30-0.60 |
0.25-0.66 |
0.020 |
0.025 |
0.010 |
0.012 |
0.20-0.50 |
0.18-0.56 |
8.00-9.50 |
7.90-9.60 |
0.85-1.05 |
0.80-1.10 |
|
ASTM A378 grade 91 welded Alloy Steel pipe/tube mechanical properties
|
|
Tensile strength,ksi[mpa] |
Yield strength,min,ksi[mpa] |
Elongation in 8 in[200mm],min,% |
Elongation in 2 in[50mm],min,% |
Reduction of area,min,% |
|
Grade 91 |
85-110 |
60[415] |
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18 |
-- |
ASTM A378 grade 91 Alloy Steel pipe Specifications or Size:Out Diameter 12.5mm—824mm ；Wall Thickness : 2mm—100mm；Length: Random length, Fixed Length, SRL, DRL
Heat treatment:Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting
ASTM A378 grade 91 Alloy Steel pipe Surface treatment:PVC,black and color painting；Transparent oil,anti-rust oil；According to clients requirement
Finished goods condition:hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Payment : TT, LC,DP are all ok
Trade Terms : FOB / CFR /CIF
Delivery period: according to the material ,the standard, and the quantity of the contract.
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