Steel SPHD · finish state
Steel SPHD Galvanized
Properties of the Galvanized condition, compared with the other SPHD tempers.
Use where the drawn part sees humidity or outdoor exposure and painting alone is not enough; expect slightly reduced draw depth and no welding without fume control.
What is SPHD Galvanized?
SPHD Galvanized is SPHD supplied in the Galvanized condition — use where the drawn part sees humidity or outdoor exposure and painting alone is not enough; expect slightly reduced draw depth and no welding without fume control. SPHD Galvanized has a yield strength of 240 MPa (34.8 ksi) and a tensile strength of 330 MPa (47.9 ksi) — weaker than 96% of steel grades. Elongation at break is 34% and the elastic modulus is 205 GPa (29.7 Msi). SPHD Galvanized has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,495°C (2,723 °F). HR is the default condition FabDigit quotes; Galvanized is available on request or by drawing note.
Advantages
- Good corrosion resistance — 35/100, better than 97% of steel grades
- Ductile — tolerates forming and impact — 34%, better than 96% of steel grades
- High electrical conductivity — 10.8 % IACS, better than 94% of steel grades
- Forms and bends easily — 82/100, better than 94% of steel grades
- Conducts heat well — 51 W/m·K (29.5 BTU/hr·ft·°F), better than 92% of steel grades
Limitations
- Low strength — 240 MPa (34.8 ksi), worse than 96% of steel grades
- Hard to polish — 40/100, worse than 96% of steel grades
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
SPHD Galvanized properties
Typical room-temperature values for SPHD Galvanized — 9 properties are specific to this condition; the rest are grade-level values shared by every SPHD temper. Each bar shows where the value sits among the steel grades in FabDigit's library — further right is higher.
Physical3
SPHD Galvanized has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,495°C (2,723 °F).
Mechanical15
SPHD Galvanized has a yield strength of 240 MPa (34.8 ksi) and a tensile strength of 330 MPa (47.9 ksi) — weaker than 96% of steel grades. Elongation at break is 34% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
SPHD Galvanized is rated for continuous service to 200°C (392 °F). It conducts heat at 51 W/m·K (29.5 BTU/hr·ft·°F), better than 92% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
SPHD Galvanized conducts electricity at 10.8 % IACS, better than 94% of steel grades.
Chemical & Environmental3
Corrosion resistance is fair (35/100), better than 97% of steel grades.
Sustainability4
Producing a kilogram of SPHD Galvanized takes about 25 MJ of energy and emits 2.2 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 25%.
Manufacturability7
SPHD Galvanized's machinability is good (55/100, better than 62% of steel grades); weldability very good (70/100); formability very good (82/100).
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other SPHD tempers and conditions
SPHD is also supplied in 3 other conditions. The full side-by-side table is on the SPHD overview.
- HRDefaultDefault mill supply for drawn or stamped parts where the black oxide scale is acceptable or will be removed downstream.230 MPa yield · 100 HB
- GalvanizedUse where the drawn part sees humidity or outdoor exposure and painting alone is not enough; expect slightly reduced draw depth and no welding without fume control.240 MPa yield · 102 HB
- CRChoose when the part needs thin gauge, tight thickness tolerance and a bright smooth surface for visible deep-drawn shells.200 MPa yield · 92 HB
Working with SPHD Galvanized
Is SPHD easy to machine?
Very soft and gummy — use sharp positive-rake tools, high speed and generous coolant to avoid burrs and built-up edge; punching and laser/plasma cutting are preferred over milling.
Can SPHD be welded?
Excellent weldability by resistance spot, MAG, TIG and laser with no preheat (CE ≈ 0.10–0.15); remove mill scale or zinc coating locally and ventilate for galvanized stock.
Can SPHD be formed, bent or molded?
Drawing-quality grade: deep-draws, stretch-flanges and roll-forms readily; watch strain-rate sensitivity, stretcher strains after long storage (age from free N) and use good drawing lubricant.
What surface finishes work on SPHD?
No corrosion resistance bare — phosphate + e-coat/powder, zinc plate or hot-dip galvanize; pickled surface accepts paint directly, black hot-rolled scale must be blasted or pickled first.
SPHD 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 |
|---|---|---|
| CJIS G 3131 SPHD ladle analysis | ≤ 0.1 | 0.06 |
| Mn | ≤ 0.5 | 0.3 |
| P | ≤ 0.03 | 0.02 |
| S | ≤ 0.04 | 0.01 |
| Sinot specified by JIS; mills keep low for drawability | ≤ 0.05 | 0.02 |
| Altypical Al-killed practice, not a JIS requirement | 0.02 – 0.07 | 0.04 |
| Fe | balance | — |
SPHD Galvanized — frequently asked
What is SPHD Galvanized used for?
SPHD Galvanized is typically used for drawn enclosures and housings, truck body and cab panels, pressed chassis brackets and reinforcements, appliance shells, oil pans and fluid reservoirs and HVAC duct and plenum sections. In short: deep-drawing hot-rolled sheet.
What is the yield strength of SPHD Galvanized?
SPHD Galvanized has a typical yield strength of 240 MPa (34.8 ksi) and a tensile strength of 330 MPa (47.9 ksi) — weaker than 96% of steel grades. Strength varies by condition: see the 4 listed tempers.
Is SPHD Galvanized easy to machine?
Reasonably — machinability is rated good (55/100, better than 62% of steel grades). Very soft and gummy — use sharp positive-rake tools, high speed and generous coolant to avoid burrs and built-up edge; punching and laser/plasma cutting are preferred over milling.
Can SPHD Galvanized be welded?
Yes — weldability is rated very good (70/100). Excellent weldability by resistance spot, MAG, TIG and laser with no preheat (CE ≈ 0.10–0.15); remove mill scale or zinc coating locally and ventilate for galvanized stock.
What surface finishes work on SPHD Galvanized?
No corrosion resistance bare — phosphate + e-coat/powder, zinc plate or hot-dip galvanize; pickled surface accepts paint directly, black hot-rolled scale must be blasted or pickled first.
Can SPHD Galvanized be formed, bent or molded?
Drawing-quality grade: deep-draws, stretch-flanges and roll-forms readily; watch strain-rate sensitivity, stretcher strains after long storage (age from free N) and use good drawing lubricant.
What is the maximum service temperature of SPHD Galvanized?
SPHD Galvanized is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between SPHD-HR and SPHD-CR?
HR is the default condition — default mill supply for drawn or stamped parts where the black oxide scale is acceptable or will be removed downstream. CR: choose when the part needs thin gauge, tight thickness tolerance and a bright smooth surface for visible deep-drawn shells. Yield strength is 230 MPa in HR versus 200 MPa in CR.
Can FabDigit make parts in SPHD Galvanized?
Yes — SPHD Galvanized is available for sheet metal with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- JIS G 3131 — Hot-rolled mild steel plates, sheets and strip — Japanese Standards Association (2018)
- GB/T 912 / GB/T 3274 — Hot-rolled carbon structural and drawing steel sheet — SAC (2017)
- ASTM A1011/A1011M — Steel Sheet and Strip, Hot-Rolled, CS/DS grades — ASTM (2018)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
- Machinery's Handbook, 31st ed. (machinability ratings) — Industrial Press (2020)
- Hot-rolled pickled and galvanized coil datasheets (Nippon Steel / Baosteel) — mill datasheets (2022)
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.