ASTM F436 covers the chemical and mechanical requirements for hardened washers in diameters ranging from 1/4″ to 4″ inclusive. These heat treated washers are for general purpose and structural use and are suitable for use with A325 and A490 structural bolts. Additionally, they are used with bolts per A449, A354, A193, A320, F1554 and whenever specified.

F436 Types

Type 1 Carbon Steel
Type 3 Weathering Steel

F436 Styles

Circular Round SAE pattern Sizes 1/4" through 4"
Beveled Beveled Slope 2 in 12 or 9.5 degrees for use with American standard beams Sizes 1/2" through 1-1/2"
Clipped Circular or Beveled Sizes 1/2" through 1-1/2" beveled, 1/4" through 4" circular
Beveled F436 washers are normally not available above 1". Clipped bevel washers are only usually available as specials.

F436 Mechanical Properties

Plain Finish Hot Dip Galvanized
Rockwell Hardness 38 to 45 HRC Rockwell Hardness 26 to 45 HRC

F436 Chemical Requirements

Element Type 1 Type 3
Phosphorous, max 0.040% 0.040%
Sulfur, max 0.050% 0.050%
Silicon - 0.15 - 0.35%
Chromium - 0.45 - 0.65%
Nickel - 0.25 - 0.45%
Copper - 0.25 - 0.45%
Weathering steel washer may also be made from any of the steels listed in Table 2 of A325.

 

 

 

 

Washers provide a smooth bearing surface and are used under the head of a bolt and/or a nut. The chemical, mechanical, and dimensional requirements for hardened washers are covered under the ASTM specification F436. These washers are through hardened or carburized to add strength, but are physically smaller than a standard F844 flat washer. They are the recommended washer for any fastener other than a low carbon steel bolt.

 

 

 

Materials and Chemical compstition

 

1045

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.45 0.23 0.58 0.014 0.006 0.057 0.008 0.016
 

 

 

PACKING

QBH BULK

20-25KG/CTN,36CTNS/PALLET

20-30KG/BAGS,36BAGS/PALLET

ONE TON/BOXES

50KG/ IRON DRUM,12 IRON DRUMS/PALLET

 

QBH SMALL PACKING

Packing in small boxes according to customer’s requirements

Packing in plastic bag according to customer’s requirements

 

QBH PALLET TYPE

SOLID WOOD FUMIGATION PALLET

EURO Pallet

THREE SPLINT PALLET

WOODEN BOX

 

 

The advantages of QBH

  • QBH brand sales to the main quality assurance.
  • Years of export trade management, excellent service, word-of-mouth guarantee.
  • By working with TUV,escort for quality.
  • Customization of non-standard parts can be made according to customer's requirements and drawings.
  • For quality customers,we can provide a certain credit period.