ASTM A213 STANDARD SEAMLESS ALLOY STEEL TUBE FOR HIGH PRESSURE BOILER PLANT OR POWER PLANT
ASTM A213 Specified for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes.
Alloy Grade:T2, T5 ,T9,T11,T12,T91,T92
Outer diameter:6mm-760mm
Wall thickness:1mm-60mm
ASTM A213 alloy steel tube chemical composition:
| Grade | C | Mn | P | S | Si | Cr | Mo | V | N | Ni | Al | Nb | W |
| T2 | 0.10-0.20 | 0.30-0.61 | 0.025 max | 0.025 max | 0.10-0.30 | 0.50-0.81 | 0.44-0.65 | ||||||
| T5 | 0.15 max | 0.30-0.60 | 0.025 max | 0.025 max | 0.50 max | 4.00-6.00 | 0.45-0.65 | ||||||
| T9 | 0.15 max | 0.30-0.60 | 0.025 max | 0.025 max | 0.25-1.00 | 8.0-10.0 | 0.90-1.10 | ||||||
| T11 | 0.15 max | 0.30-0.60 | 0.025 max | 0.025 max | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | ||||||
| T12 | 0.15 max | 0.30-0.60 | 0.025 max | 0.025 max | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | ||||||
| T22 | 0.05-0.15 | 0.30-0.60 | 0.025 max | 0.025 max | 0.50 max | 1.90-2.60 | 0.87-1.13 | ||||||
| T91 | 0.08-0.12 | 0.30-0.60 | 0.020 max | 0.010 max | 0.20-0.50 | 8.00-9.50 | 0.85-1.05 | 0.18-0.25 | 0.03-0.07 | 0.40 max | 0.04 max | 0.06-0.10 | |
| T92 | 0.07-0.13 | 0.30-0.60 | 0.020 max | 0.010 max | 0.50 max | 8.50-9.50 | 0.30-0.60 | .015-0.25 | 0.03-0.07 | 0.40 max | 0.04 max | 0.04-0.09 | 1.50-2.00 |
ASTM A213 alloy steel tube mechanical property table:
| Grade | Tensile Strength, Mpa | Yield Strength, Mpa | Elongation, % | Hardness, HB |
| T2 | 415 min | 205 min | 30 min | 163 max |
| T5 | 415 min | 205 min | 30 min | 163 max |
| T9 | 415 min | 205 min | 30 min | 179 max |
| T11 | 415 min | 205 min | 30 min | 179 max |
| T12 | 415 min | 205 min | 30 min | 179 max |
| T22 | 415 min | 205 min | 30 min | 163 max |
| T91 | 585 min | 415 min | 20 min | 250 max |
| T92 | 585 min | 415 min | 20 min | 250 max |
ASTM A213 alloy steel tube outside diameter tolerance:
| Method | Outside Diameter,mm | Tolerance, mm |
| Hot Rolled | OD=101.6 | +0.4 / -0.8 |
| 101.6<OD=190.5 | +0.4 / -1.2 | |
| 190.5<OD=228.6 | +0.4 / -1.6 | |
| Cold Drawn | OD<25.4 | ±0.10 |
| 25.4=OD=38.1 | ±0.15 | |
| 38.1<OD<50.8 | ±0.20 | |
| 50.8=OD<63.5 | ±0.25 | |
| 63.5=OD<76.2 | ±0.30 | |
| 76.2=OD=101.6 | ±0.38 | |
| 101.6<OD=190.5 | +0.38 / -0.64 | |
| 190.5<OD=228.6 | +0.38 / -1.14 |
ASTM A213 alloy steel tube wall thickness tolerance:
| Method | Outside Diameter, mm | Tolerance, % |
| Hot Rolled | OD=101.6,WT=2.4 | +40 / -0 |
| OD=101.6,2.4<WT=3.8 | +35 / -0 | |
| OD=101.6,3.8<WT=4.6 | +33 / -0 | |
| OD=101.6,WT>4.6 | +28 / -0 | |
| OD>101.6,2.4<WT=3.8 | +35 / -0 | |
| OD>101.6,3.8<WT=4.6 | +33 / -0 | |
| OD>101.6,WT>4.6 | +28 / -0 | |
| Cold Drawn | OD=38.1 | +20 / -0 |
| OD>38.1 | +22 / -0 |
