Q345D tsis tshua muaj kub resistant steel yeeb nkab zoo kev ruaj ntseg

18nb tua cov hlau uas muaj Nb, nrog cov khoom zoo ib yam li 14MnNb, feem ntau yog siv rau cranes, blowers, tshuaj machinery, thiab lwm yam

09mncupti atmospheric corrosion resistant steel muaj qhov zoo ntawm qhov kub thiab txias cuam tshuam toughness, weldability thiab txias thiab kub workability. Nws yog tsuas yog siv rau txhua yam ntawm machinery nyob rau hauv cov av noo thiab los nag thiab corrosive cua ib puag ncig

12mnv tsis tshua muaj kub steel nrog kev ua haujlwm kub ntawm - 70 ℃ yog tsuas yog siv rau cov qauv ntawm cov tub yees tshuab ua haujlwm ntawm qhov kub thiab txias.

14MnNb muaj cov khoom zoo sib xws rau 18nb steel thiab feem ntau yog siv rau cov hlab ntsha thiab lwm yam khoom siv nrog kev ua haujlwm kub ntawm - 20-450 ℃

16Mn muaj cov cuab yeej zoo txhua yam, tsis tshua muaj kev ua haujlwm kub, txias stamping kev ua tau zoo, vuam kev ua tau zoo thiab machinability. Nws yog tsuas yog siv nyob rau hauv mining, tsheb thauj mus los, tshuaj lom neeg kev lag luam thiab lwm yam machinery

Cov khoom ntawm 16mnre zoo ib yam li 16Mn steel, qhov cuam tshuam toughness thiab txias dabtsi yog khoov zog zoo dua 16Mn, thiab lub hom phiaj yog tib yam li 16Mn steel.

Q345D steel yeeb nkab yog ib qho ntawm cov ntaub ntawv ntawm cov yeeb nkab steel.

Q345D steel yeeb nkab

Q345D steel yeeb nkab

Q345A, Q345B, Q345C, Q345D thiab Q345E yog cov qib zoo. Lawv nce los ntawm ib mus rau e, feem ntau yog vim qhov sib txawv ntawm qhov kub thiab txias tshwm sim los ntawm cov ntsiab lus sib txawv ntawm cov ntsiab lus micro xws li phosphorus thiab sulfur, uas sawv cev rau qhov sib txawv ntawm qhov kub thiab txias thiab cov khoom siv ntawm cov yeeb nkab tshuaj muaj pes tsawg leeg.

Q345A, tsis muaj kev cuam tshuam; Q345B, 20 ° ib txwm kub cuam tshuam; Q345C, 0 degree cuam tshuam; Q345D, yog - 20 degree cuam tshuam; Q345E yog - 40 degree cuam tshuam. Ntawm qhov sib txawv ntawm qhov kub thiab txias, qhov cuam tshuam qhov tseem ceeb kuj txawv.

Q lub zog tawm los tsis qis dua 345mp, thiab qib zoo qhia tau hais tias nws muaj cov khoom tsis huv (carbon, manganese, silicon, sulfur thiab phosphorus). Yog tus nqi ntawm impurities (cov ntsiab lus) hauv cov hlau. Tom qab A, B, C thiab D, cov ntsiab lus impurity tsawg dua

Q345A muaj phosphorus thiab sulfur tsawg dua lossis sib npaug li 0.045%

Q345B muaj phosphorus thiab sulfur tsawg dua lossis sib npaug li 0.040%

Q345C muaj phosphorus thiab sulfur tsawg dua lossis sib npaug li 0.035%

Q345D muaj phosphorus thiab sulfur tsawg dua lossis sib npaug li 0.030%

Q345E muaj phosphorus thiab sulfur tsawg dua lossis sib npaug li 0.025%

Qhov ntau phosphorus thiab sulfur impurities nyob rau hauv steel, qhov phem qhov cuam tshuam toughness

Q345A -

Q345B Akv tsis tsawg dua 34 ntawm 20 ℃

Ntawm Q345C 0 ℃, Akv yuav tsum tsis pub tsawg tshaj 34

Q345D - Akv tsis tsawg dua 34 ntawm 20 ℃

Ntawm Q345E - 40 ℃, Akv tsis tsawg dua 27

Qhov laj thawj kawg yog tias qhov txo qis ntawm P thiab s impurities hauv steel txhawb kev txhim kho ntawm kev cuam tshuam toughness ntawm qhov kub thiab txias. Ib qho yog cov tshuaj muaj pes tsawg leeg ntawm Q345 thiab lwm qhov yog cov khoom siv kho tshuab ntawm Q345.

C:≤0.18 Si: 0.20-0.60 Mn: 1.00-1.60 P:≤0.030 S:≤0.030 Ni:≤0.30 Cr≤0.30 Cu:≤0.20 Al:≥0.015 V: 0.02-0.15 Nb: 0.015-0.0.0.

Tshuaj muaj pes tsawg leeg ntawm Q345B seamless yeeb nkab:

C: 0.12-0.20 Si: 0.20-0.60 Mn: 1.00-1.60 P:≤0.040 S:≤0.040 Ni:≤0.30 Cr:≤0.30 Cu:≤0.20 V: 0.02-0.15 Nb: 0.015-0.06

Tshuaj muaj pes tsawg leeg ntawm Q345A seamless yeeb nkab:

C: 0.12-0.20 Si: 0.20-0.60 Mn: 1.00-1.60 P:≤0.045 S:≤0.045 Ni:≤0.30 Cr:≤0.30 Cu:≤0.20 V: 0.02-0.15 Nb: 0.015-0.06

Tshuaj muaj pes tsawg leeg ntawm Q345C seamless yeeb nkab:

C: 0.12-0.20 Si: 0.20-0.60 Mn: 1.00-1.60 P:≤0.035 S:≤0.035 Ni:≤0.30 Cr:≤0.30 Cu:≤0.20 Al:≥0.015 V: 0.02-0.15 Nb:0.06

Tshuaj muaj pes tsawg leeg ntawm Q345E seamless yeeb nkab:

C:≤0.18 Si: 0.20-0.60 Mn: 1.00-1.60 P:≤0.025 S:≤0.025 Ni:≤0.30 Cr≤0.30 Cu:≤0.20 Al:≥0.015 V: 0.02-0.15 Nb: 0.065-0.0.

Cov khoom siv ntawm Q345D seamless steel yeeb nkab:

Tensile zog: 490-675 tawm lub zog: ≥ 345 elongation: ≥ 22

Cov khoom siv ntawm Q345B seamless yeeb nkab:

Tensile zog: 490-675 yield zog: ≥ 345 elongation: ≥ 21

Cov khoom siv ntawm Q345A seamless yeeb nkab:

Tensile zog: 490-675 yield zog: ≥ 345 elongation: ≥ 21

Cov khoom siv ntawm Q345C seamless yeeb nkab:

Tensile zog: 490-675 tawm lub zog: ≥ 345 elongation: ≥ 22

Cov khoom siv ntawm Q345E seamless yeeb nkab:

Tensile zog: 490-675 tawm lub zog: ≥ 345 elongation: ≥ 22