S460N (EN 10025-3): Raws li ib txwm ua los yog ib txwm dov, nrog 460 MPa yield zog thiab -20℃toughness, zoo tagnrho rau txuas hniav thiab cranes nyob rau hauv nruab nrab climates.
S460M (EN 10025-4): Thermomechanically dov (TMCP), nrog 460 MPa yield zog thiab -50℃toughness, haum rau cov huab cua txias thiab complex forming.
S460N yog ua tiav rau cov qauv microstructure zoo ib yam, thaum S460M's TMCP txhim kho formability thiab toughness, ua kom ze rau en 10025 3 s460nl normalized structural steel phaj hauv kev ua haujlwm txias.
Kev sib piv tshuaj lom neeg
|
Element |
S460N (EN 10025-3, Ladle, max %) |
S460M (EN 10025-4, Ladle, max %) |
Lub luag haujlwm hauv Cov Khoom |
|---|---|---|---|
|
Cov pa roj carbon (C) |
0.20 |
0.16 |
S460M cov pa roj carbon qis ua kom muaj zog thiab weldability. |
|
Silicon (Si) |
0.60 |
0.60 |
Zoo sib xws deoxidation thiab lub zog pab. |
|
Manganese (Mn) |
1.00-1.70 |
1.00-1.70 |
Boosts lub zog thiab toughness nyob rau hauv ob qho tib si. |
|
Phosphorus (P) |
0.030 |
0.025 |
S460M lub qis phosphorus txhim kho toughness. |
|
Sulfur (S) |
0.025 |
0.020 |
S460M lub qis sulfur txhim khu kev vuam zoo. |
|
Niobium (Nb) |
0.05 |
0.05 |
Refines nplej rau toughness nyob rau hauv ob qho tib si. |
|
Vanadium (V) |
0.20 |
0.12 |
S460N's siab dua vanadium txhawb zog. |
Mechanical Properties Sib piv
|
Khoom |
S460N (EN 10025-3, Tsawg dua lossis sib npaug li 16 hli) |
S460M (EN 10025-4, Tsawg dua lossis sib npaug li 16 hli) |
|---|---|---|
|
Yield zog (min, MPa) |
460 |
460 |
|
Tensile zog (MPa) |
540-720 |
530-720 |
|
Elongation (min,%) |
17 |
17 |
|
Impact Toughness (min, J) |
27 -20 degree |
27 -50 degree |
|
Hardness (Brinell) |
170-210 (ntev) |
160-200 (ntev) |
Processing thiab Fabrication
S460N: Normalized for consistent microstructure; suited for standard welding and machining. Preheating (100-150°C) for >20 hli; PWHT yeem (550-650 degree).
S460M: TMCP txhim kho formability rau cov duab nyuaj; qis CEV (Less tshaj los yog sib npaug rau 0.45%) txhim kho weldability. Zoo sib xws preheating thiab PWHT.
Consumables: Ob leeg siv ER70S-6 (GMAW), EM12K flux nrog EH14 hlau (SAW).
Daim ntawv thov
S460N: Cov choj, cranes, lub tsev ua haujlwm nyob rau hauv nruab nrab huab cua (xws li, temperate Europe).
S460M: Offshore platforms, cua yees, thiab cov qauv nyob rau hauv cov huab cua txias (xws li, sab qaum teb Europe) vim muaj superior toughness thiab formability.
Rau qhov txias txias, S460M dlhos nrog en 10025 3 s460nl normalized structural steel phaj.
