Lincoln SAR Noise Reduction Tube KP5529 1 200 Amp High strength stainless steel contact surfaces KH840XL High strength stainless steel contact surfaces for superior corrosion resistance 2% offset) 470 MPa (68 ksi) minimum Requirement — tensile strength 550–690 MPa (80–100 ksi) Requirement — elongation 19% minimum Requirement — Charpy V notch 27 J (20 ft·lbf) minimum Typical — yield strength 500–610 MPa (72–88 ksi) Typical — tensile strength 580–680 MPa (85–98 ksi) Typical — elongation 20–30% Typical — CVN at −40 °C (−40 °F) 75–114 J (55–84 ft·lbf) Typical — CVN at −51 °C (−60 °F) 27–114 J (20–84 ft·lbf) Typical values are Lincoln Electric published test results across test conditions Replacement noise reduction tube for the VIKING™ SAR air regulator part numbers K5443 1 and K5443 2