Steel 26CrMo4-2
EN 26CrMo4-2
26CrMo4-2 (1.7219) is a chromium-molybdenum low-alloy steel from the EN 10083 quenched-and-tempered family, using about 0.26 % C with Cr and Mo for hardenability and temper resistance.
Reference datasheet — 26CrMo4-2 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the +QT condition
26CrMo4-2 tempers and conditions
26CrMo4-2 is supplied in 6 conditions, soft to hard. +QT is the default FabDigit quotes; the values on this page are for it.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Softest supply condition for cold heading of bolt blanks and heavy machining before hardening. | 380 | 620 | 22 | 185 HB | — |
Normalized | Uniform ferrite–pearlite structure for forged blanks that will be re-hardened or used at moderate loads. | 430 | 680 | 20 | 200 HB | — |
Cold drawn | Cold-drawn bright bar for close tolerance blanks and automatic-lathe parts before final hardening. | 620 | 760 | 11 | 20 HRC | 8 % IACS |
sour-service / NACE MR0175 limited hardness | High-temper condition with hardness capped at 22 HRC for H₂S-containing (sour) bolting service. | 640 | 810 | 19 | 20 HRC | — |
+QTDefault Quenched and tempered | Standard delivery condition for pressure-service bolts and studs; best strength/toughness balance up to about 500 °C. | 700 | 880 | 17 | 26 HRC | — |
+QT high strength | Higher tempering-strength variant for property class 10.9 bolts where preload capacity matters more than toughness. | 900 | 1,010 | 12 | 33 HRC | — |
What is 26CrMo4-2?
26CrMo4-2 (1.7219) is a chromium-molybdenum low-alloy steel from the EN 10083 quenched-and-tempered family, using about 0.26 % C with Cr and Mo for hardenability and temper resistance. It is chosen for high-strength bolts, studs and similar threaded parts, and is supplied as hot-rolled and cold-drawn bar, wire and forging stock in +A, +N, +QT and +C conditions. In the default +QT state it reaches 700 MPa yield, 880 MPa tensile, 17 % elongation and about 260 HB (26 HRC), with service to 500 °C. It has no corrosion resistance bare and needs preheat plus post-weld tempering; 42CrMo4 is the usual step up for larger sections. 26CrMo4-2 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,420°C (2,588 °F). 26CrMo4-2 has a yield strength of 700 MPa (102 ksi) and a tensile strength of 880 MPa (128 ksi) — stronger than 81% of steel grades. Elongation at break is 17% and the elastic modulus is 210 GPa (30.5 Msi).
What is 26CrMo4-2 used for?
- High-strength bolts
- Fasteners
- Studs
Advantages
- High service temperature — 500°C (932 °F), better than 90% of steel grades
- High strength — 700 MPa (102 ksi), better than 81% of steel grades
- Polishes to a fine finish — 65/100, better than 78% of steel grades
26CrMo4-2 properties
Typical room-temperature values for 26CrMo4-2-+QT; bars are the position among steel grades.
Physical3
26CrMo4-2 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,420°C (2,588 °F).
Mechanical16
26CrMo4-2 has a yield strength of 700 MPa (102 ksi) and a tensile strength of 880 MPa (128 ksi) — stronger than 81% of steel grades. Elongation at break is 17% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
26CrMo4-2 is rated for continuous service to 500°C (932 °F). It conducts heat at 42 W/m·K (24.3 BTU/hr·ft·°F), worse than 56% of steel grades. Thermal expansion is 12.3 µm/m·K (6.83 µin/in·°F).
Electrical3
26CrMo4-2 conducts electricity at 7.8 % IACS, worse than 57% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of 26CrMo4-2 takes about 30 MJ of energy and emits 2.1 kg of CO₂ — more than 56% of steel grades. Typical recycled content is 30%.
Manufacturability7
26CrMo4-2's machinability is fair (52/100, better than 52% of steel grades); weldability fair (50/100); formability fair (35/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the steel family
Yield strength against density for every steel grade FabDigit runs. 26CrMo4-2 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 26CrMo4-2
Is 26CrMo4-2 easy to machine?
Machines best at 200–260 HB with carbide inserts and rigid setups; above 30 HRC use coated carbide/CBN, reduce speed ~30 %.
Can 26CrMo4-2 be welded?
Weldable with low-hydrogen or matching Cr-Mo consumables; preheat 200–300 °C and PWHT/temper at 620–680 °C to avoid hard HAZ cracking.
Can 26CrMo4-2 be formed, bent or molded?
Cold head or roll threads only in annealed/spheroidized condition; hot forge 1100–850 °C then normalize before quench and temper.
26CrMo4-2 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Cmedium carbon for hardenability with weldability | 0.22 – 0.29 | 0.26 |
| Si | ≤ 0.4 | 0.25 |
| Mn | 0.6 – 0.9 | 0.75 |
| Pimpurity | ≤ 0.03 | 0.01 |
| Slow S for fastener toughness | ≤ 0.02 | 0.01 |
| Cr | 0.9 – 1.2 | 1.05 |
| Motemper-embrittlement resistance, creep at 400–500 °C | 0.15 – 0.3 | 0.22 |
| Niresidual | ≤ 0.4 | 0.1 |
| Algrain refining, fine-grain practice | 0.02 – 0.05 | 0.03 |
| Fe | balance |
What surface finishes work on 26CrMo4-2?
No natural corrosion protection — use zinc or Zn-Ni plating (bake for hydrogen relief), phosphate + oil, Dacromet or paint; hard chrome and nitriding also possible.
Surface treatments FabDigit runs on steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Organic Coating
Black / Phosphate
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Steel 26CrMo4-2 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 1.7219
How much does 26CrMo4-2 cost?
26CrMo4-2 is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
26CrMo4-2 — frequently asked
What is 26CrMo4-2 used for?
26CrMo4-2 is typically used for high-strength bolts, fasteners and studs. In short: fastener-grade Cr-Mo steel; good hardenability at moderate carbon; 500 °C service capability.
What is the yield strength of 26CrMo4-2?
26CrMo4-2 has a typical yield strength of 700 MPa (102 ksi) and a tensile strength of 880 MPa (128 ksi) — stronger than 81% of steel grades. Strength varies by condition: see the 6 listed tempers.
Is 26CrMo4-2 easy to machine?
Reasonably — machinability is rated fair (52/100, better than 52% of steel grades). Machines best at 200–260 HB with carbide inserts and rigid setups; above 30 HRC use coated carbide/CBN, reduce speed ~30 %.
Can 26CrMo4-2 be welded?
With care — weldability is rated fair (50/100). Weldable with low-hydrogen or matching Cr-Mo consumables; preheat 200–300 °C and PWHT/temper at 620–680 °C to avoid hard HAZ cracking.
What surface finishes work on 26CrMo4-2?
No natural corrosion protection — use zinc or Zn-Ni plating (bake for hydrogen relief), phosphate + oil, Dacromet or paint; hard chrome and nitriding also possible.
Can 26CrMo4-2 be formed, bent or molded?
Cold head or roll threads only in annealed/spheroidized condition; hot forge 1100–850 °C then normalize before quench and temper.
What is the maximum service temperature of 26CrMo4-2?
26CrMo4-2 is rated for continuous use to about 500°C (932 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 26CrMo4-2 +QT and 26CrMo4-2 QT-900?
+QT is the default condition — standard delivery condition for pressure-service bolts and studs; best strength/toughness balance up to about 500 °C. QT-900: higher tempering-strength variant for property class 10.9 bolts where preload capacity matters more than toughness. Yield strength is 700 MPa in +QT versus 900 MPa in QT-900.
How much does 26CrMo4-2 cost?
26CrMo4-2 is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- EN 10269 — Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties — CEN (2013)
- EN 10083-3 — Heat treatable steels: alloy steels (25CrMo4/34CrMo4 comparison data) — CEN (2006)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.19 — Fatigue and Fracture — ASM International (1996)
- Cr-Mo bolting steel bar datasheets (1.7218/1.7219/1.7220 class) — European special steel producers (2022)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.