|
| Brand Name: | Jinxi Pipe |
| Model Number: | Alloy Steel Pipe |
| MOQ: | 1 |
| Price: | 1500 USD/TON |
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability: | 100000 |
ASTM A213 T991 Alloy Steel Tube For Petrochemical Industry
Specification
ASTM A213 T991 is a seamless ferritic alloy steel tube primarily used in boilers, superheaters, and heat exchangers for high-temperature and high-pressure service.
| American Standard | Standard Name |
| A213 / A213M | Seamless Ferritic and Austenitic Alloy-steel Boiler,Superheater and Heat-Exchanger Tubes |
ASTM A213 T991 Alloy Steel Pipe Chemical Composition
Sources American Standard A213 / A213M TABLE 1 Chemical Composition Limits, % , for Low Alloy Steel
| Grade | UNS Designation |
C | Mn | P | S | Si | Ni | Cr | Mo | V | B | Nb | N | Al | W | Others |
| T911 | K91061 | 0.09-0.13 | 0.30-0.60 | 0.020 | 0.010 | 0.10-0.50 | 0.40 | 8.5-9.5 | 0.90-1.10 | 0.18-0.25 | 0.0003-0.006 | 0.06-0.10 | 0.040-0.090 | 0.02 | 0.90-1.10 | Ti 0.01 Zr 0.01 |
ASTM A213 T991 Alloy Steel Pipe Mechanical Properties
Sources American Standard A213 / A213M TABLE 4 Tensile and Hardness Requirements
| Grade Low Aloy Steels: |
UNS Designation |
TensileStrength. min, ksi [MPa] |
Yield Strength ,min, ksi [MPa] |
Elongationin 2 in. or 50 mm. min, %B.C |
HardnessA | |
| Brinell/Vickers | Rockwell | |||||
| T911 | K91061 | 90 [620] | 64 [440] | 20 | 250 HBW/ 265 HV | 25 HRC |
ASTM A213 T991 Alloy Steel Pipe Heat Treatment
Sources American Standard A213 / A213M TABLE 3 Heat Treatment and Grain Size Requirements A
| Grade Ferritic Alloy Steels |
UNS Designation |
Heat Treatment Type | Austenitizing/Solution Treatment StabilizingTemperature,min or range °F [°C] |
Cooling Media | Subcritical Annealingor TemperingTemperature,min or range °F [°C] |
| T911 | K91061 | normalize and temper | 1900-1975[1040-1080] | D | 1365-1435[740-780] |
ASTM A213 T991 Alloy Steel Pipe Manufacturing Proces
ASTM A213 T991 Alloy Steel Pipe Application
ASTM A213 T91 Alloy Steel Pipe Packing & Loading
a. 1/2"-2"Plain end with black oil paint, caps both ends, bundles with loading belt.
b. 2"-4"Beveled end with black oil paint, caps both ends, bundles with loading belt.
c. 10"-20"Beveled end with black oil paint, caps both ends, loose packed in to container.
→Alloy Steel Pipes is transported in containers