Stainless hlau 1.4021: Martensitic Machining Bar Properties

Martensitic stainless hlau yog tsim los rau siab hardness, thiab lwm yam khoom muaj kev cuam tshuam rau ib qho twg. Lawv qhov kev ua haujlwm kub ua haujlwm yog txwv los ntawm lawv qhov poob ntawm qhov dej ntawm sub- xoom kub, thiab poob ntawm lub zog los ntawm ntau tshaj -tempering ntawm qhov kub thiab txias.

Alloy designations ntawm 1.4021 zoo ib yam, tab sis nws yuav tsis yog ncaj qha sib npaug rau: 420, UNS42000, 1.4021, 1.4024, 1.4028, 1.4029, 1.4030, thiab 1.4034. Nws yog muab nyob rau hauv daim ntawv ntawm ib tug bar.

Tshuaj muaj pes tsawg leeg

1.4021 steel	TS EN 10088-3: 2005
Chemical Element	% Tam sim no
Cov pa roj carbon (C)	0.16 - 0.25
Chromium (Cr)	12.00 - 14.00
Manganese (Mn)	0.0 - 1.50
Silicon (Si)	0.0 - 1.00
Phosphorus (P)	0.0 - 0.04
Sulfur (S)	0.0 - 0.03
Hlau (Fe)	Tshuav

 

Cov khoom

Lub cev khoom	Tus nqi
Qhov ntom	7.75 g / cm³
Thermal Expansion	10.3 x 10-6/K
Modulus ntawm Elasticity	200 GPa
Thermal conductivity	24.9 W/m.K
Hluav taws xob Resistivity	0.55 x 10-6 Ω.m

Bar - Mus txog 160mm Dia/Thickness	TS EN 10088-3: 2005
Mechanical Property	Tus nqi
Pov thawj Stress	500 - 600 MPa
Tensile zog	700 - 950 MPa
Elongation A	12 - 13%

 

Fabrication

Fabrication yuav tsum tau ua los ntawm cov txheej txheem uas tso cai rau cov weldability tsis zoo, nrog rau qhov kawg harden thiab temper kub kho.

Ua haujlwm txias- Nws tsis pom zoo, Nws tsuas yog haum rau me me deformation. Kev tawg yuav tshwm sim vim qhov deformation loj heev.

Kub ua haujlwm- Cov txheej txheem ua haujlwm kub yuav tsum tau ua tom qab cov cua sov tsis sib xws rau 2100-2250℃F (1149-1232℃). Kub ua haujlwm qis dua 1700℃F (927 degree) tuaj yeem ua rau tawg.

Machineability- Qib 420 muaj kev ua haujlwm zoo heev, qhov siab tshaj plaws ntawm ib qho ntawm cov hlau tsis tshua muaj nyob. Nws ua tiav zoo tshaj plaws nyob rau hauv sub- tseem ceeb annealed mob.