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Kanak Steel Blog: guides for buyers and engineers
Comparisons, standards explained, finishes, pressure ratings and a guide to every grade we supply — written by our technical team to help you specify the right material the first time.
- Comparison · 9
- Buying guide · 6
- Standards guide · 3
- Grade guide · 1
Latest guides
ComparisonInconel 625 vs Inconel 825: which nickel alloy does your service need?Acid or seawater, light duty or high pressure: how Inconel 625 and 825 really differ, which standards apply to each form, and when the cheaper alloy is enough.
ComparisonS32760 vs S32750: how Zeron 100 and SAF 2507 super duplex really differZeron 100 or SAF 2507? What tungsten and copper add to S32760, F55 vs F53 flanges, the standards for each form and whether one can replace the other.
Comparison904L vs Alloy 825 vs Alloy 20: choosing an alloy for sulphuric and phosphoric acidFertilizer and phosphate plants: when SS 904L is enough, when to step up to 825 or Alloy 20, and what to check on 904L flanges and fasteners in phosphoric acid.
ComparisonHastelloy C22 vs C276: which C-alloy fits your process?Reducing or oxidising? How Hastelloy C22 and C276 differ, which filler to weld them with, how to tell them apart by PMI, and how they compare with Inconel.
Buying guideTubesheet and tube plate materials: how to choose and order a heat-exchanger tube plateTubesheet, tube sheet or tube plate: choosing 904L, 825, duplex or Hastelloy, plate versus forging, solid versus clad, and a checklist for ordering tube plate blanks.
Buying guide2B vs BA vs No.4: stainless steel sheet finishes explainedWhat 2B, 2D, BA (2R), No.1, No.4, No.8 and hairline finishes mean on stainless steel sheet, how each is made, and which one to order for your part.
Standards guideFlange pressure ratings explained: ASME B16.5 classes, material groups and temperatureWhy "Class 300" is not 300 psi: how ASME B16.5 material groups and temperature set a flange's allowable pressure, with the groups for stainless, duplex and nickel-alloy flanges.
Standards guideSchedule 40 vs 40S: pipe schedules for stainless, nickel alloy and carbon steelThe difference between Sch 40 and Sch 40S, ASME B36.10 and B36.19, how wall thickness is chosen, and which schedules stainless, nickel-alloy and carbon steel pipe use.
ComparisonSA 387 Gr 11 vs Gr 22 vs SA 516 Gr 70: choosing pressure-vessel plateCarbon steel or chrome-moly? How SA 516 Gr 70, SA 387 Gr 11 and SA 387 Gr 22 compare on chemistry, strength, temperature and hydrogen service, and how to order them.
Grade guideInconel 825 or Incoloy 825? The same alloy, explainedInconel 825 and Incoloy 825 are the same material: Alloy 825, UNS N08825, W.Nr 2.4858. Why both names exist, how to order it correctly and how it compares with 625 and 904L.
ComparisonSS 904L vs 316L: when is 904L worth the extra cost?904L or 316L? Compare chemistry, PREN, sulphuric-acid and chloride resistance, strength, standards and welding, with a simple rule for when the upgrade pays.Start with your product
Sheet & plate2B vs BA vs No.4How to order Alloy 825 sheet and plate to ASTM B424
SA 387 Gr 11 vs Gr 22 vs SA 516 Gr 70
Tubesheet (tube plate) materials
FlangesFlange pressure ratings explainedWeld neck vs slip-on flange
How to specify Alloy 825 flanges to ASTM B564
S32760 vs S32750 (F55 vs F53)
Comparisons
ComparisonInconel 625 vs Inconel 825: which nickel alloy does your service need?Acid or seawater, light duty or high pressure: how Inconel 625 and 825 really differ, which standards apply to each form, and when the cheaper alloy is enough.ComparisonS32760 vs S32750: how Zeron 100 and SAF 2507 super duplex really differZeron 100 or SAF 2507? What tungsten and copper add to S32760, F55 vs F53 flanges, the standards for each form and whether one can replace the other.Comparison904L vs Alloy 825 vs Alloy 20: choosing an alloy for sulphuric and phosphoric acidFertilizer and phosphate plants: when SS 904L is enough, when to step up to 825 or Alloy 20, and what to check on 904L flanges and fasteners in phosphoric acid.ComparisonHastelloy C22 vs C276: which C-alloy fits your process?Reducing or oxidising? How Hastelloy C22 and C276 differ, which filler to weld them with, how to tell them apart by PMI, and how they compare with Inconel.
ComparisonHastelloy C276 vs Inconel 625: which one for your service?C276 or 625? A side-by-side comparison of chemistry, corrosion resistance, strength, temperature limits, standards and cost, with a simple rule for choosing.
ComparisonDuplex 2205 vs super duplex 2507: when is the upgrade worth it?Duplex 2205 or super duplex 2507? Compare chemistry, PREN, strength, seawater performance, temperature limits, standards (F51/F53) and welding.ComparisonSS 904L vs 316L: when is 904L worth the extra cost?904L or 316L? Compare chemistry, PREN, sulphuric-acid and chloride resistance, strength, standards and welding, with a simple rule for when the upgrade pays.
ComparisonWeld neck vs slip-on flange: which one to specifyWeld neck (WN) or slip-on (SO) flange? How they are welded, how strength and fatigue compare, cost, inspection, and which service each is used for under ASME B16.5.ComparisonSA 387 Gr 11 vs Gr 22 vs SA 516 Gr 70: choosing pressure-vessel plateCarbon steel or chrome-moly? How SA 516 Gr 70, SA 387 Gr 11 and SA 387 Gr 22 compare on chemistry, strength, temperature and hydrogen service, and how to order them.Buying guides
Buying guideTubesheet and tube plate materials: how to choose and order a heat-exchanger tube plateTubesheet, tube sheet or tube plate: choosing 904L, 825, duplex or Hastelloy, plate versus forging, solid versus clad, and a checklist for ordering tube plate blanks.
Buying guideEN 10204 3.1 vs 3.2 certificates: what each one provesWhat an EN 10204 3.1 and 3.2 certificate each prove, when a project needs 3.2, and a checklist for reading a mill test certificate before you accept material.
Buying guideHow to order Alloy 825 sheet and plate to ASTM B424: a buyer’s checklistA buyer's guide to Inconel 825 sheet and plate to ASTM B424: sheet vs plate, sizes, minimum properties, condition, weight calculation, cutting and what to put on the PO.
Buying guideHow to specify Alloy 825 pipe fittings to ASTM B366 (WPNICMC)Inconel 825 buttweld fittings to ASTM B366 WPNICMC: elbows, tees, reducers, caps and stub ends — dimensions to ASME B16.9, seamless vs welded, and ordering checklist.
Buying guideHow to specify Alloy 825 flanges to ASTM B564Inconel 825 flanges forged to ASTM B564 UNS N08825: weld neck, slip-on, blind, socket weld and more, with ASME B16.5 / B16.47 dimensions, pressure classes and an ordering checklist.Buying guide2B vs BA vs No.4: stainless steel sheet finishes explainedWhat 2B, 2D, BA (2R), No.1, No.4, No.8 and hairline finishes mean on stainless steel sheet, how each is made, and which one to order for your part.Standards guides
Standards guideAlloy 825 standards: B424, B423, B366, B564 and the restWhich ASTM specification applies to each Inconel / Incoloy 825 product: B424 plate, B423 seamless pipe, B705 welded pipe, B366 fittings, B564 flanges and B425 bar.Standards guideFlange pressure ratings explained: ASME B16.5 classes, material groups and temperatureWhy "Class 300" is not 300 psi: how ASME B16.5 material groups and temperature set a flange's allowable pressure, with the groups for stainless, duplex and nickel-alloy flanges.Standards guideSchedule 40 vs 40S: pipe schedules for stainless, nickel alloy and carbon steelThe difference between Sch 40 and Sch 40S, ASME B36.10 and B36.19, how wall thickness is chosen, and which schedules stainless, nickel-alloy and carbon steel pipe use.Grade guides
One guide per grade: composition, properties, uses, welding, equivalents and the standard for each product form.
Stainless Steel
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Inconel & Incoloy
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