GB/T 21470-2008 Active National standards

GB/T 21470-2008 Machining allowances and tolerances for steel open die forgings on hammer—Disks,columns,rings and seamless cylindrical sleeves

Publish Date: 2008-02-28 Implement Date: 2008-08-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 21470-2008

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Forging and pressing

ICS Name: \nSteel forgings

Publish Date: 2008-02-28

Implement Date: 2008-08-01

Pages: 15 pages

Scope

This standard specifies the machining allowances and tolerances for various types of free forgings, including discs, cylinders, perforated discs, rings, and sleeves. This standard applies to free forgings made from carbon steel and alloy steel with a carbon content not exceeding 0.9% and a total content of other alloying elements not exceeding 4%. For free forgings that exceed the scope specified in this standard, the allowances and tolerances shall be determined through separate negotiations between the supplier and the purchaser.

Development Information

Word Count: 26 Thousand words Pages: 15 pages

Replace the following standards

GB/T 15826.2-1995 Machining allowances and tolerances for steel open die forgings on hammer—Disks and columns GB/T 15826.3-1995 Machining allowances and tolerances for steel open die forgings on hammer—Disks with holes GB/T 15826.4-1995 Machining allowances and tolerances for steel open die forgings on hammer—Rings GB/T 15826.5-1995 Machining allowances and tolerances for steel open die forgings on hammer—Seamles cylinder hushings

Referenced Standards

GB/T 21469-2008 Machining allowances and tolerances for steel open die forgings on hammer—General requirement JB/T 9179.4-2013 Hydraulic press mechanical processing allowance and tolerance for steel free forgings Part 4: Discs and punch types JB/T 9179.5-2013 JB/T 9179.5-2013 Machining allowances and tolerances for steel free-forging parts of hydraulic press - Part 5: Short cylinder type JB/T 9179.7-2013 JB/T 9179.7-2013 Machining allowances and tolerances for steel free-forming parts of hydraulic presses - Part 7: Tubular type. (English translation only) JB/T 9179.8-2013 Machining allowance and tolerance for steel free-formed parts on hydraulic press - Part 8: Circles, cylinders and flanges JB/T 9179.4-1999 JB/T 9179.5-1999 JB/T 9179.7-1999 JB/T 9179.7-1999 - Mechanical machining allowance and tolerance for cylinder type free forging pieces on hydraulic press JB/T 9179.8-1999 JB/T 9179.8-1999 Machining allowances and tolerances for free-forging parts of hydraulic presses - Round ring type

Related Standards

GB/T 13320-2007 Active

GB/T 13320-2007 Metellographic grading atlas and assessing method for steel die forgings

Publish Date: 2007-04-18

GB/T 20911-2007 Active

GB/T 20911-2007 Semi finished products for forging—Tolerances on dimensions shape and mass

Publish Date: 2007-04-18

GB/T 21469-2008 Active

GB/T 21469-2008 Machining allowances and tolerances for steel open die forgings on hammer—General requirement

Publish Date: 2008-02-28

GB/T 21471-2008 Active

GB/T 21471-2008 Machining allowances and tolerances for steel open die forgings on hammer—Shafts

Publish Date: 2008-02-28

GB/T 22131-2008 Replaced

GB/T 22131-2008 Practice for ultrasonic examination from bored surfaces of cylindrical forgings

Publish Date: 2008-06-25

GB/T 25135-2010 Active

GB/T 25135-2010 The quality control criterion of forging technology

Publish Date: 2010-09-26