Steel E7024-SR (Stress relieved)
Heat-treated state
GOST E7024
Use when the fabrication is post-weld heat treated for dimensional stability or code compliance; strength drops slightly, ductility rises.
Values for the SR condition
Other E7024 tempers and conditions
E7024 is listed in 3 conditions; see the grade overview at E7024.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
SRThis page Stress relieved | Use when the fabrication is post-weld heat treated for dimensional stability or code compliance; strength drops slightly, ductility rises. | 400 | 490 | 29 | 150 HB | 11 % IACS |
AWDefault As-welded deposit | Default condition for structural fillet and flat-position production welding on mild steel; take this for normal design allowables. | 430 | 520 | 25 | 165 HB | 10 % IACS |
Impact-qualified classification | Choose when a documented Charpy value at −18 °C and slightly higher ductility are required from a high-deposition iron-powder electrode. | 440 | 530 | 26 | 165 HB | 10 % IACS |
What is E7024-SR?
E7024-SR is E7024 heat treated to SR — use when the fabrication is post-weld heat treated for dimensional stability or code compliance; strength drops slightly, ductility rises. E7024-SR has a yield strength of 400 MPa (58 ksi) and a tensile strength of 490 MPa (71.1 ksi) — weaker than 60% of steel grades. Elongation at break is 29% and the elastic modulus is 205 GPa (29.7 Msi). E7024-SR has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,470°C (2,678 °F). AW is the default condition FabDigit quotes; SR is available on request or by drawing note.
Advantages
- High electrical conductivity — 11 % IACS, better than 98% of steel grades
- Ductile — tolerates forming and impact — 29%, better than 91% of steel grades
- Conducts heat well — 49 W/m·K (28.3 BTU/hr·ft·°F), better than 83% of steel grades
- Readily welded — 85/100, better than 83% of steel grades
E7024-SR properties
Typical room-temperature values for E7024-SR; 22 are specific to this condition. Other listed values are E7024 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
E7024-SR has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,470°C (2,678 °F).
Mechanical16
E7024-SR has a yield strength of 400 MPa (58 ksi) and a tensile strength of 490 MPa (71.1 ksi) — weaker than 60% of steel grades. Elongation at break is 29% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
E7024-SR is rated for continuous service to 400°C (752 °F). It conducts heat at 49 W/m·K (28.3 BTU/hr·ft·°F), better than 83% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
E7024-SR conducts electricity at 11 % IACS, better than 98% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (10/100), worse than 86% of steel grades.
Sustainability4
Producing a kilogram of E7024-SR takes about 32 MJ of energy and emits 2.4 kg of CO₂ — more than 70% of steel grades. Typical recycled content is 30%.
Manufacturability7
E7024-SR's machinability is good (60/100, better than 83% of steel grades); weldability excellent (85/100); formability good (60/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with E7024-SR
Is E7024 easy to machine?
Deposit machines like hot-rolled mild steel at ~60 % of AISI 1212; grind off slag first, and watch for hard spots and entrapped slag when finish-cutting.
Can E7024 be welded?
AC or DC either polarity, drag technique with high amperage; flat and horizontal-fillet only (F1/F2) — not for vertical, overhead, or high-restraint root passes, and not a low-hydrogen electrode.
Can E7024 be formed, bent or molded?
Not a wrought product; deposit tolerates limited cold straightening/peening but heavy cold bending of weld beads risks toe cracking.
What surface finishes work on E7024?
Self-releasing slag leaves a clean ripple bead; blast or wire-brush and apply zinc-rich primer/paint, as the deposit has no inherent corrosion resistance.
E7024 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 |
|---|---|---|
| Ctypical deposit; AWS A5.1 sets no chemistry limits for E7024 | 0.03 – 0.12 | 0.07 |
| Mn | 0.3 – 1 | 0.6 |
| Sifrom titania/iron-powder coating | 0.2 – 0.7 | 0.4 |
| P | ≤ 0.04 | 0.02 |
| S | ≤ 0.04 | 0.02 |
| Fecore wire plus iron powder in coating | balance | — |
E7024-SR — frequently asked
What is E7024-SR used for?
E7024-SR is typically used for flat position fillet welds, production welding and general mild steel fabrication. In short: highest deposition stick electrode; flat and horizontal fillets only; speed over toughness.
What is the yield strength of E7024-SR?
E7024-SR has a typical yield strength of 400 MPa (58 ksi) and a tensile strength of 490 MPa (71.1 ksi) — weaker than 60% of steel grades. Strength varies by condition: see the 3 listed tempers.
Is E7024-SR easy to machine?
Reasonably — machinability is rated good (60/100, better than 83% of steel grades). Deposit machines like hot-rolled mild steel at ~60 % of AISI 1212; grind off slag first, and watch for hard spots and entrapped slag when finish-cutting.
Can E7024-SR be welded?
Yes — weldability is rated excellent (85/100). AC or DC either polarity, drag technique with high amperage; flat and horizontal-fillet only (F1/F2) — not for vertical, overhead, or high-restraint root passes, and not a low-hydrogen electrode.
What surface finishes work on E7024-SR?
Self-releasing slag leaves a clean ripple bead; blast or wire-brush and apply zinc-rich primer/paint, as the deposit has no inherent corrosion resistance.
Can E7024-SR be formed, bent or molded?
Not a wrought product; deposit tolerates limited cold straightening/peening but heavy cold bending of weld beads risks toe cracking.
What is the maximum service temperature of E7024-SR?
E7024-SR is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between E7024-AW and E7024-SR?
AW is the default condition — default condition for structural fillet and flat-position production welding on mild steel; take this for normal design allowables. SR: use when the fabrication is post-weld heat treated for dimensional stability or code compliance; strength drops slightly, ductility rises. Yield strength is 430 MPa in AW versus 400 MPa in SR.
Sources
- AWS A5.1/A5.1M — Specification for Carbon Steel Electrodes for Shielded Metal Arc Welding — American Welding Society (2012)
- Jetweld 1 (E7024) electrode datasheet — Lincoln Electric (2022)
- ASM Handbook Vol. 6 — Welding, Brazing, and Soldering — ASM International (1993)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.