Tool Steel Descriptions
| STEEL SURFACE CONDITIONS: |
| CD FL |
COLD DRAWN FLAT ON-SIZE MATERIAL
COLD DRAWN BAR STOCK |
| CD RD |
COLD DRAWN FLAT ON-SIZE MATERIAL
COLD DRAWN BAR STOCK |
| CRS FL |
COLD ROLLED STEEL FLATS ON-SIZE BAR STOCK COLD FINISH |
| CRS RD |
COLD ROLLED STEEL ROUNDS ON-SIZE BAR STOCK COLD FINISH |
| DR |
DRILL ROD
CENTERLESS GROUND ROUNDS +/- .001(SMALL SIZES +/-.0005)
LENGTHS COME 36” STANDARD, 144” ALSO AVAILABLE
METRIC DIAMETERS AVAILABLE UP TO 25 MM |
| FG OS |
PRECISION GROUND GAGE STOCK- OVERSIZE TOLERANCES
+ .010 TO + .015 ON THICKNESS AND WIDTH
SPINDLE GROUND FINISH |
| FG REG |
PRECISION GROUND GAGE STOCK- ON-SIZE TOLERANCES
+/-.001 THICKNESS + .005 -.000 WIDTH
SPINDLE GROUND FINISH |
| HB |
HOLLOW BAR
TURNED AND BORED HOLLOW ROUND STOCK USUALLY PROVIDED WITH ALLOWANCE TO FINISH TO CUSTOMER SPECS |
| HG RD |
HARDENED GROUND ROUND
TOL. UNDER 1/8” DIA (+.000 -.0005); OVER 1/8”DIA ( +.000 -.001)
MATERIAL HAS BEEN HEAT TREATED
A-2 59-62 Rc
M-2 63-66 Rc |
| HR BO FL |
HOT ROLL BURN OUT FLAT
HOT ROLLED FINISH, NOT MACHINED.
BURNED BY FLAME CUTTING TO ANY SHAPE. |
| HR BO RD |
HOT ROLLED BURN OUT ROUND
HOT ROLLED FINISH, NOT MACHINED
BURNED BY FLAME CUTTING INTO A RING FROM PLATE. |
| HR BO RD |
HOT ROLLED BURN OUT ROUND
HOT ROLLED FINISH, NOT MACHINED
BURNED BY FLAME CUTTING INTO A RING FROM PLATE |
| HR FL |
HOT ROLL FLAT
HOT ROLLED PLATE PRODUCT, CUT TO SIZE |
| HR RD |
HOT ROLL ROUND
ROUND BARS
MANUFACTURED BY HOT ROLLING.
FINISH IS NOT MACHINED
APPROX. TOL. +/- .010 |
| PM BO FL |
PRE-MACHINED BURN-OUT FLAT
MATERIAL IS BURNED FROM PLATE, THEN GROUND TOP AND BOTTOM TO CUSTOMER SPECS. |
| PM BO RD |
PRE-MACHINED BURN-OUT ROUND
RINGS BURNED FROM PLATE, THEN GROUND TOP AND BOTTOM TO CUSTOMER SPECS. |
| PM FL |
PRE-MACHINED FLATS
DECARB FREE MATERIAL, CUT FROM PLATE
THICKNESS GROUND OVERSIZE +.015 TO +.035,
SAW CUT +1/16 TO + 1/8” WIDTH AND LENGTH |
| RT RD |
ROUGH TURNED ROUND
DECARB FREE ROUNDS, TURNED OVERSIZE +.015 TO +.030”
LARGER DIAMETERS +1/16 TO +1/4” |
| SC FL |
SAW CUT FLATS
RECTANGLES WHICH ARE COLD SAW CUT ON ALL DIMENSIONS
FROM LARGER BLOCKS. TOL. +1/16 TO + 1/8” ALL DIMENSIONS. |
| SG FL |
SPECIAL GROUND FLATS
FLAT BAR STOCK GROUND TO CUSTOMER SPECS |
| SG RD |
SPECIAL GROUND ROUNDS
ROUND BARS GROUND TO CUSOTMERS SPECIFICATIONS. |
| TGP RD |
TURNED, GROUND AND POLISHED ROUNDS
TOL. +.000/-.002 TO -.004” |
| STEEL HARDNESS CONDITION: |
| ANLD |
ANNEALED
FULLY ANNEALED MATERIAL USUALLY NO MORE THAN 17-22 Rc MAXIMUM HARDNESS |
| PHT |
PRE-HEAT TREATED OR PRE-HARD
HEAT TREATED TO MID HARDNESS OF 27-35 Rc |
| SR |
STRESS RELIEVED
HEAT TREATED TO TAKE OUT STRESSES WITHOUT FULLY ANNEALING. |
| POWDER |
POWDER METAL TOOL STEEL
SPECIALIZED MELTING PROCESS FOR STEEL INGOTS THAT PRODUCES A SUPERIOR MICROSTRUCTURE.
POWDER METAL TECHNOLOGY IS USED PRIMARILY IN THE VERY HIGHLY ALLOYED GRADES SUCH AS HIGH SPEED TOOL STEEL.
SOLD IN ANNEALED CONDITION. |
| P-20 32 |
P-20 MATERIAL THAT HAS MINIMUM HARDNESS OF 32 Rc |
| P-20 36 |
P-20 MATERIAL THAT HAS A MINIMUM HARDNESS OF 36 Rc |
| P-20 HI-HARD |
P-20 MATERIAL HEAT TREATED TO 38-42 Rc |
| P-20 PHT |
P-20 MATERIAL HEAT TREATED TO 27-35 Rc |
Data is typical and should not be construed as actual values for any catagory.
Applications and technical information require engineers and tool designers to exercise independent judgement.