A335 specification alloy steel yeeb nkab yog ib hom seamless alloy steel yeeb nkab, uas yog tsuas yog siv rau high-temperature thiab high-pressure boilers, superheaters, reheaters, dej-txias phab ntsa headers, economizers, condensate kav thiab lwm yam khoom.
A335 specification alloy steel yeeb nkab yog tsim los ntawm Cr-Mo alloy steel, uas muaj kev nkag siab zoo, lub zog ruaj khov, oxidation tsis kam thiab corrosion kuj, thiab tuaj yeem ua haujlwm ruaj khov rau lub sijhawm ntev hauv qhov hnyav ntawm qhov kub thiab txias. Tsis tas li ntawd, A335 specification alloy steel yeeb nkab kuj muaj qhov zoo weldability thiab processability, ua rau nws yooj yim rau nruab thiab tswj.
Kev xav tau tshuaj ntawm Alloy Steel Seamless Pipes
| Qib | P-5 | P-9 | P-11 | P-22 | P-91 | P-91 tseem yuav suav nrog cov hauv qab no: | |
| Element | UNS npe | K41545 | S50400 | K11597 | K21590 | K91560 | |
| Cov pa roj carbon | 0.15 max | 0.15 max | 0.05 - 0.15 | 0.05 - 0.15 | 0.08 - 0.12 | V ntawm 018 - 0.25 | |
| Manganese | 0.30 - 0.60 | 0.30 - 0.60 | 0.30 - 0.60 | 0.30 - 0.60 | 0.30 - 0.60 | N ntawm 0030 - 0.070 | |
| Phosphorus, max | 0.025 | 0.025 | 0.025 | 0.025 | 0.020 | Ni ntawm 0.40 max | |
| Sulfur, max | 0.025 | 0.025 | 0.025 | 0.025 | 0.010 | Al ntawm 0.02 max | |
| Silicon | 0.50 max | 0.25 - 1.00 | 0.50 - 1.00 | 0.50 max | 0.20 -0.50 | Cb ntawm 006 - 0.10 | |
| Chromium | 4.00 - 6.00 | 8.00 - 10.00 | 1.00 - 1.50 | 1.90 - 2.60 | 8.00 - 9.50 | Ti ntawm 0.01 max | |
| Molybdenum | 0.45 -0.65 | 0.90 - 1.10 | 0.44 - 0.65 | 0.87 - 1.13 | 0.85 - 1.05 | Zr ntawm 0.01 max | |
Tensile Requirements ntawm Alloy Steel Seamless Pipes
| Seamless | ||||||
| P-5 | P-9 | P-11 | P-22 | P-91 | P91 yuav tsum tsis txhob muaj qhov tawv tsis tshaj 250 HB / 265 HV [25HRC]. | |
| Tensile zog, min., psi | ||||||
| ksi ua | 60 | 60 | 60 | 60 | 85 | |
| MPa | 415 | 415 | 415 | 415 | 585 | |
| Yield zog, min., psi | ||||||
| ksi ua | 30 | 30 | 30 | 30 | 60 | |
| MPa | 205 | 205 | 205 | 205 | 415 | |
