Stainless Steel E307-17
Grade
EN E307 · UNS W30710 · ASTM A5.4
E307-17 = rutile-silica coated electrode, AC or DCEP
Higher silica coating giving the finest bead appearance and fluid slag; best for flat/horizontal cosmetic passes.
Values for the E307-17 condition
Other E307 tempers and conditions
E307 is listed in 5 conditions; see the grade overview at E307.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
E307-17This page Rutile-silica coated electrode, AC or DCEP | Higher silica coating giving the finest bead appearance and fluid slag; best for flat/horizontal cosmetic passes. | 425 | 625 | 38 | 198 HB | 2.2 % IACS |
Rutile (titania) coated electrode, AC or DCEP | Most widely stocked coating type: smooth arc, easy slag release, all-position, usable on AC transformers. | 430 | 630 | 37 | 200 HB | 2.2 % IACS |
AWDefault As-welded deposit | Standard condition for dissimilar-metal and buffer-layer joints; use as deposited without PWHT whenever the code permits. | 440 | 640 | 38 | 200 HB | 2.2 % IACS |
Lime/basic coated electrode, DCEP only | Choose for maximum weld-metal toughness and lowest hydrogen on thick, restrained dissimilar joints. | 450 | 645 | 40 | 200 HB | 2.2 % IACS |
Stress relieved | Condition after the joint receives a base-metal PWHT; expect slightly higher strength and lower ductility/toughness from carbide and σ-phase formation. | 460 | 655 | 32 | 210 HB | 2.3 % IACS |
What is E307-17?
E307-17 is E307 in the E307-17 grade — higher silica coating giving the finest bead appearance and fluid slag; best for flat/horizontal cosmetic passes. E307-17 has a yield strength of 425 MPa (61.6 ksi) and a tensile strength of 625 MPa (90.6 ksi) — stronger than 66% of stainless steel grades. Elongation at break is 38% and the elastic modulus is 193 GPa (28 Msi). E307-17 has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,400°C (2,552 °F). AW is the default condition FabDigit quotes; E307-17 is available on request or by drawing note.
Advantages
- Readily welded — 94/100, better than 99% of stainless steel grades
Limitations
- Hard to polish — 60/100, worse than 80% of stainless steel grades
- High embodied carbon — 5.5 kg CO₂/kg, worse than 77% of stainless steel grades
E307-17 properties
Typical room-temperature values for E307-17; 21 are specific to this condition. Other listed values are E307 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
E307-17 has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical16
E307-17 has a yield strength of 425 MPa (61.6 ksi) and a tensile strength of 625 MPa (90.6 ksi) — stronger than 66% of stainless steel grades. Elongation at break is 38% and the elastic modulus is 193 GPa (28 Msi).
Thermal6
E307-17 is rated for continuous service to 700°C (1,292 °F). It conducts heat at 15 W/m·K (8.67 BTU/hr·ft·°F), worse than 59% of stainless steel grades. Thermal expansion is 17.5 µm/m·K (9.72 µin/in·°F).
Electrical3
E307-17 conducts electricity at 2.2 % IACS, worse than 61% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (60/100), worse than 58% of stainless steel grades.
Sustainability4
Producing a kilogram of E307-17 takes about 55 MJ of energy and emits 5.5 kg of CO₂ — more than 50% of stainless steel grades. Typical recycled content is 55%.
Manufacturability7
E307-17's machinability is poor (32/100, worse than 62% of stainless steel grades); weldability excellent (94/100); formability good (55/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with E307-17
Is E307 easy to machine?
Fully austenitic deposit work-hardens rapidly — use sharp carbide tools, positive rake, heavy feed and no dwell; grinding is often easier than turning.
Can E307 be welded?
Redry electrodes per maker (rutile ~150 °C, basic ~300 °C), keep interpass below ~150 °C, use short arc and stringer beads to limit dilution when joining stainless to carbon/high-Mn steel.
Can E307 be formed, bent or molded?
Not a wrought product; deposited metal is ductile (>30% elongation) and tolerates the strain of restrained joints and buffer layers.
What surface finishes work on E307?
Remove slag fully, then pickle/passivate or mechanically polish; heat tint must be removed to restore corrosion resistance.
E307 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 |
|---|---|---|
| CAWS A5.4 E307 | 0.04 – 0.14 | 0.09 |
| Cr | 18 – 21.5 | 19.5 |
| Ni | 9 – 10.7 | 9.8 |
| Mnhigh Mn suppresses hot cracking | 3.3 – 4.75 | 4 |
| Mo | 0.5 – 1.5 | 1 |
| Si | ≤ 0.9 | 0.6 |
| Cu | ≤ 0.75 | — |
| P | ≤ 0.04 | — |
| S | ≤ 0.03 | — |
| Fe | balance | — |
E307-17 — frequently asked
What is E307-17 used for?
E307-17 is typically used for dissimilar metal welding, manganese steel to stainless joints, hardfacing underlayers and crack-sensitive joints. In short: most crack-resistant austenitic filler; dissimilar-joint workhorse; buffer layer for hardfacing.
What is the yield strength of E307-17?
E307-17 has a typical yield strength of 425 MPa (61.6 ksi) and a tensile strength of 625 MPa (90.6 ksi) — stronger than 66% of stainless steel grades. Strength varies by condition: see the 5 listed tempers.
Is E307-17 easy to machine?
Not especially — machinability is rated poor (32/100, worse than 62% of stainless steel grades). Fully austenitic deposit work-hardens rapidly — use sharp carbide tools, positive rake, heavy feed and no dwell; grinding is often easier than turning.
Can E307-17 be welded?
Yes — weldability is rated excellent (94/100). Redry electrodes per maker (rutile ~150 °C, basic ~300 °C), keep interpass below ~150 °C, use short arc and stringer beads to limit dilution when joining stainless to carbon/high-Mn steel.
What surface finishes work on E307-17?
Remove slag fully, then pickle/passivate or mechanically polish; heat tint must be removed to restore corrosion resistance.
Can E307-17 be formed, bent or molded?
Not a wrought product; deposited metal is ductile (>30% elongation) and tolerates the strain of restrained joints and buffer layers.
What is the maximum service temperature of E307-17?
E307-17 is rated for continuous use to about 700°C (1,292 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between E307-AW and E307-SR?
AW is the default condition — standard condition for dissimilar-metal and buffer-layer joints; use as deposited without PWHT whenever the code permits. SR: condition after the joint receives a base-metal PWHT; expect slightly higher strength and lower ductility/toughness from carbide and σ-phase formation. Yield strength is 440 MPa in AW versus 460 MPa in SR.
Sources
- AWS A5.4/A5.4M — Specification for Stainless Steel Electrodes for Shielded Metal Arc Welding — American Welding Society (2012)
- AWS A5.9/A5.9M — Bare Stainless Steel Welding Electrodes and Rods — American Welding Society (2017)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering — ASM International (1993)
- Stainless SMAW electrode datasheets (307 type) — Böhler Welding / Lincoln Electric / ESAB (2023)
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.