Stoodite 21


Stoodite 21

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Stoodite 21 is a low carbon, molybdenum strengthened cobalt chromium alloy with excellent high temperature strength and stability frequently used in hot die applications. With anti-galling, cavitation erosion, and corrosion resistance, Stoodite 21 is a popular fluid valve seat facing alloy. Certification to AWS specification - A5.21 ERCoCr-E for bare rods; A5.13 ECoCr-E for coated electrodes.


Certification to AWS specification - A5.21 ERCoCr-E for bare rods; A5.13 ECoCr-E for coated electrodes. Stoodite cobalt base alloys are manufactured to conform to the chemistry and usability requirements of the specifications noted. Certification to ASME and MIL must be requested at the time order is placed and must appear on the written P.O. Additional charges apply for military, nuclear, or special certification requirements.

  • Excellent high temperature strength and stability
  • Anti-galling under self-mated conditions
  • Cavitation erosion resistant
  • Corrosion resistant

Stoodite 21


Typical Tensile Properties

Deposition Data

Current Deposition Type Diameter Voltage
90-120 A Full Range 3.2 mm (1/8 in.) 20-40 V
120-140 A Full Range 4.0 mm (5/32 in.) 20-40 V
140-160 A Full Range 4.8 mm (3/16 in.) 20-40 V
160-180 A Full Range 6.4 mm (1/4 in.) 20-40 V


Classifications AWS A5.21 : ERCoCr-E
AWS A5.13 : ECoCr-E

Typical Weld Metal Analysis %

C Co Cr Fe Mn Mo Ni Si W
0.2 % BAL % 27.9 % 3.4 % 0.5 % 5.2 % 2.5 % 0.7 % 0.1 %

How to purchase Stoodite 21

We're as eager to put ESAB gear in your hands as you are to have it.  That's why we sell our products with distributors who'll give you the attention, support, and value you deserve.  Their expertise will make sure that you're as happy with the purchasing process as we know you'll be with your purchase itself.

To make things even easier, we've developed the online shopping list below.  As you browse our site, you'll be able to click on any product to have it added to this easy reference sheet.  And when you're done, you can send the list to yourself or print it out and bring it in to the distributor of your choice.

To find an ESAB distributor, just use the distributor locator tool featured on every page of our site.  Alternatively, you can call our support line at +361 382 1235 and we'll point you in the right direction.

Part Numbers and Accessories

Part Numbers : Stoodite 21