Dab tsi yog qhov txawv ntawm 347H austenitic stainless hlau thiab TP347H?

Dab tsi yog qhov txawv ntawm 347H austenitic stainless hlau thiab TP347H?

347H yog ASTM tus qauv hlau, belongs rau austenitic stainless hlau, vim chromium Cr, npib tsib xee Ni, niobium Nb, nws intergranular corrosion kuj thiab polysulfuric acid intergranular kev nyuaj siab corrosion kuj zoo, nrog kub siab zog thiab yas, zoo weldability, cov hlau muaj siab kub siab zog thiab kub oxidation tsis kam tshaj 316, yog li nws yog feem ntau siv raws li ib tug thermal zog steel. (Ntau cov hlau tshwj xeeb tuaj yeem them rau kuv) Cov lus qhia tshwj xeeb kub dov ntawv, nruab nrab tuab qhib phaj, kub dov puag ncig steel, lub teeb puag ncig bar thiab lwm yam.

Lub teb chaws hom naj npawb: 1Cr19Ni11Nb
Tisco siv tus qauv: ASTM A240 / A240M -2019
Tshuaj muaj pes tsawg leeg:
Cov pa roj carbon C: {{0}}.04 ~ 0.10
Mn: Tsawg dua lossis sib npaug rau 2.00
Si: Tsawg dua lossis sib npaug rau 1.00
Chromium Cr: 17 {1}} ~ 19 00
Nickel: 9. {1}} ~ 12. {3}}
P: Tsawg dua lossis sib npaug rau 0.045
Sulfur S: Tsawg dua lossis sib npaug rau 0.030
Nb: Tsawg dua lossis sib npaug rau 1.10

Mechanical zog:

Yield zog Rp0.2 (MPa): Ntau dua lossis sib npaug rau 205

Tensile zog PM (MPa): Ntau dua lossis sib npaug rau 515

Elongation A (%): Ntau dua lossis sib npaug rau 30

Tshooj shrinkage (%): Ntau dua lossis sib npaug rau 40

Daim ntawv thov: Feem ntau siv nyob rau hauv loj boiler superheater, reheater, chav pipeline, petrochemical tshav kub exchanger yeeb fittings, thiab lwm yam.