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MAC 431 Se - Martensitic Chromium Nickel Super Freecutting Stainless Steel
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USASPEAD
USALED
USASPEAD 40M
USACASE 32M
USASPEAD 202
USACUT 55
USANGLE
MMC
USABEND
USAFLAT
USAMILD
USACASE
USEN 6
USAKEY
USASPEAD 40
USASPEAD 55
USAWELD
USALOY 16/USEN 16
USALOY 19/USEN 19
USALOY 4140/USEN 4140
USALOY 24/ USEN 24
USALOY 24T/ USEN 24T
USEN 31
NITROY 40B
USALOY 34/USEN 34
USALOY 36/USEN 36
USALOY 351/USEN 351
USALOY 8620/USEN 8620
MAC 416 Se
MAC 431 Se
MAC 303 Se
MAC 316 Se
MMC GREY CAST IRON
SG IRON
MMC SILVER STEEL
USASPEAD (Annealed)
USASPEAD N.S.O.H.
USASPEAD 'D2'
USAKEY(Bright Drawn)
Woodruff Keys
USAFOIL (Steel)
PLASTIC Shim
USAFOIL (Brass)
PENTON
LEADED GUNMETAL
PHOSPHOR BRONZE
Rounds Centerless Ground
General
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Colour
Brown / Black
Bright Drawn
BS 970: Part 4: 1991: 441S49
BS 970: 1955: En57 KE 431 Se
Chemical Compostition
C
Mn
Si
S
P
Cr
Mo
Ni
Se
Percentage
0.12-0.20
1.50 max.
1.00 max.
0.030 max.
0.040 max.
15.0-18.0
0.60 max.
2.00-3.00
0.15-0.30
Form of Supply
Centreless Ground Bars: Hardened and Tempered to 'T' Condition.
Tolerances for Stainless Centerless Ground Bar
Imperial Sizes:
Up to 7/32" dia ±0.0005".
Metric sizes:
(ISO h8)
>1mm to 3mm -0.014mm.
1/4" - 1 1/2" dia ±0.001"
>3mm to 6mm -0.018mm.
1 5/8"- 2" dia ±0.002".
>6mm to 10mm -0.022mm.
2 1/8" - 3" dia ±0.0025".
>18mm to 30 mm -0.033mm
>10mm to 18 mm-0.027mm.
Rounds Centerless Ground Stock Size Range
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Size (ins dia.)
3/16
5/16
1/2
9/16
5/8
3/4
7/8
1
1 1/4
1 5/8
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