牌號(hào)

Trade Name

直徑

Diameter

HRC

（國(guó)家標(biāo)準(zhǔn)臺(tái)式硬度計(jì)）

特點(diǎn)及主要用途

characteristicsandapplication

HG100

1.6/2.8/4.0

-

用于擠壓輥打底層

Used to the backing of squeezing roller

HG100A

1.6/2.8/4.0

-

用于擠壓輥打底層

Used to the backing of squeezing roller

HG200

1.6/2.8/4.0

20-35

用于擠壓輥過(guò)渡層

Used to the transition Layer of squeezing roller

HG300

1.6/2.8/4.0

35-50

用于擠壓輥硬化層

Used to thehardened layerof squeezing roller

HG500

1.6

50-60

用于擠壓輥表面花紋

Used to thesurface figureof squeezing roller