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3/32X3/4X18 STARRETT A-2 FLAT STOCK

3/32X3/4X18 STARRETT A-2 FLAT STOCK
Item #: 1-8552-57499

Product Info

STARRETT


No. 497 Air Hardening – Standard

FEATURES:

  • The 5% chromium content makes this steel especially desirable for punches and dies to be used in long production runs since it gives the tools far longer life. Up to 50% more pieces per sharpening can be produced than with oil hardening steel.
  • Full-length identification eliminates confusion with other steels.
  • Maintains close dimensional accuracy throughout the heat treating process. The wide 75° hardening range makes this virtually foolproof.
  • High wear resistance is also ideal for punches and dies to stamp silicon, stainless steels, monel metal, and other types of abrasive material.

HARDENING:

  • Wide hardening range of 1,700°F to 1,775°F, with 1,750°F recommended for most work.
  • For heavier sections use the high side of the range.
  • Heat uniformly throughout but do not soak longer than necessary.
  • Cool in still air.
  • No pre-heat is required if pack or atmosphere controlled furnace methods are used, but with the open furnace method a pre-heat of 1,450° F is recommended.

TEMPERING:

  • A tempering time of two hours at 1,700°F to 1,775°F is recommended (quench – still air, Rockwell C – 63.5 to 65).
  • For maximum toughness, double temper for two hours at each temperature recommended.
  • Following table may also be used as a guide, depending on type of work:

– Light blanking punches and dies: 400°F to 425°F. – Heavy blanking punches and dies: 700°F. – Annealing: 1525°F to 1575°F. Furnace cool at no more than 50° per hour to 800° for maximum softness.

TOLERANCES:

  • Thickness – ±.001".
  • Width – Up to 8" .000/.005", 9" and over .000/.015", squares ± .010".
  • Length – 18"+1/4" / 36"+5/8", Saw cut oversize to allow for finish cutting.
  • Squareness – Edge All: .003 per inch, Finish: 35 microinch or finer.

NOMINAL ANALYSIS (AISI A2):

  • Carbon – 1.00
  • Chromium – 5.25
  • Manganese – .60
  • Tu


3/32X3/4X18 STARRETT A-2 FLAT STOCK

Item Specifications

  • 18"
  • 3/32"
  • A2 Air Hardening
  • 3/4"
  • 0.36 lbs per EA
$32.04
Regular Price: $32.04
Special Order*
UOM : EA
QTY:

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