Rathbone Precision Metals, Inc.

Rathbone Precision Metals, Inc. Profile Capabilities

PROFILE DIMENSIONAL TOLERANCES

Characteristic
Standard Rolling Tolerance
Standard Drawing Tolerance
Optional
Linear
± .002" Thickness
± .005" Width
±.002" All
±.0005"
Radial
±.010" Shape Dependent
± .005" small radii
± .010" large radii
± .002"
Corners/Fillets
Dependent on location on profile
.015" max-90° Blend on Obtuse
.005" max - 90° Obtuse - Review
Surface Finish
63 Ra
125 Ra
32 Ra
Size Limitations
Typically less than 1.5"
Typically Range .032** to 2.5"
Configuration Dependent

ADDITIONAL CONDITIONS

Characteristic
Standard Tolerances
Optional
Straightness

Twist
.020" / Ft. cumulative
.030" / Ft. cumulative - small wire
± 2° per foot
.005" / Fl
Temper
As Drawn or As Rolled
Stress Relieved Annealed Heat Treated (Outside)
Decarburization
Not checked unless there is a customer requirement
.005" max total and or partial- Requires surface improved raw stock
Lengths
10'-12' from coil raw material 8'-14' from bar raw material with variation in length to be within ± 1.0"
Dead Lengths Abrasive / Cold Saw Pieces ± .005" on cut pieces
Mechanical Properties
Rockwell Hardness reported if required by customer
Outside Testing Available
Surface Coatings
Carbon & Alloy - Phosphate & Soap Stainless - Cleaned dull matte finish Copper & Brass - Residual Soap
Bright & Shiny Appearance
Cut Ends
Deformed Pinch cut/ Shear cut
Shaped Shear, Saw cut ends
Shipping Containers
Reddi Crate
Wooden Boxes, Spools Banded Bundles
Hardness Range Values
Carbon HRB 75- HRB 95 Alloy HRB 90 - HRC 28 Stainless HRB 90-HRC 25 Copper & Brass HRB 60-HRB 85
May be adjusted by modification of cold work reductions

PARTIAL LISTING OF MATERIALS

CATEGORY
GRADE
Carbon Steel
1006, 1010, 1018, 1022, 1030, 1040, 1050, 1060, 1070, 1095
Free Cutting
1117, 1137, 1441. 1144, 1215, 12L14
Alloy Steels
4130,4140,4150,4340, 4820, 6150, 8620, 8640, 8650,9310,52100
300 Series Stainless
302, 303, 304, 305, 316, 316LS, 321
400 Series Stainless
403,405,410,416,420. 430,430F, 430FR, 450, 455, Trimrite
High Temperature
Pyromct A286, 600, 625, 718
Copper, Brass, Bronze
101, 102, 110, 182, 187, 230,260,270, 335, 340, 360,464,510,521,544, 651,655, 706,715, 752
Nickel- Copper
400, 405

CUSTOMER ADVANTAGES

  • Reduced Machining
  • Higher Strength
  • Smoother Surfaces
  • Minimized Scrap
  • Closer Tolerances
  • Consistent Dimensions
  • Better Grain Structure
  • Lot to Lot Repeatability
  • Less processing time

QUOTATION to PRODUCTION PROCESS

Quotation To Production Process

INVOLUTE GEARS

Involute Gears

Information Required
  1. Number of Teeth
  2. Diametral Pitch
  3. Pressure Angle
Standard Tolerances
Outside Diameter ±.002"
Measure over pins ±.0015"
Root Diameter ± .005"

Gear is not checked to any specific AGMA level as tooth profile is checked using an optical comparator.