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項(xiàng)目

GL-65

GL-55

GL-48

GL-75

AL₂O₃ , %

≥65

≥55

≥48

≥75

Fe₂O₃ , %

≤2.0

≤2.0

≤2.0

/

耐火度，℃

≥1790

≥1770

≥1750

≥1790

顯氣孔率AP , %

≤19

≤19

≤18

≤23

常溫耐壓強(qiáng)度CCS , MPa

≥58.8

≥49,0

≥49.0

≥1520

0.20 MPa荷重軟化開始溫度RUL，℃

≥1500

≥1480

≥1450

≥58.8

重?zé)€變化率PLC , %

1500℃x2h

0-0.2

0-02

/

0-0.2

1450℃x2h

/

/

0-0,2

1500℃x2h

透氣度

必須進(jìn)行此項(xiàng)檢驗(yàn)，將實(shí)測(cè)數(shù)據(jù)在質(zhì)量證明書中注明.

This in ection must be carried out, and the measured data shall be indicated in the quality certificate.