Steel 30Q130
EN 30Q130 · ASTM A876 · JIS 30P105
30Q130 (ASTM A876, also listed as 30P105 and M130-30S) is a grain-oriented Fe-3%Si electrical steel whose crystal grains are aligned with the rolling direction to give very low core loss along that axis.
Reference datasheet — 30Q130 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.
30Q130 tempers and conditions
30Q130 is supplied in one standard condition, SRA.
Supply forms, finishes and certifications
Ways 30Q130 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
FP-C5Default | Fully processed, C-5 phosphate insulating coating | Coating |
Uncoated | Uncoated / mill | Coating |
What is 30Q130?
30Q130 (ASTM A876, also listed as 30P105 and M130-30S) is a grain-oriented Fe-3%Si electrical steel whose crystal grains are aligned with the rolling direction to give very low core loss along that axis. It is supplied as thin coil and slit strip with an inorganic C-5 phosphate insulating coating, in stress-relief annealed or uncoated form, and is used almost exclusively for transformer and reactor cores. Mechanical values are 315 MPa yield, 345 MPa tensile and 8 % elongation, with service to about 200 °C and low corrosion resistance (score 25). The material is highly anisotropic and brittle, so magnetic performance drops sharply if flux runs across the rolling direction; non-oriented silicon steel is the choice for rotating machines. 30Q130 has a density of 7.65 g/cm³ (0.276 lb/in³), lighter than 97% of steel grades. It melts at 1,470°C (2,678 °F). 30Q130 has a yield strength of 315 MPa (45.7 ksi) and a tensile strength of 345 MPa (50 ksi) — weaker than 82% of steel grades. Elongation at break is 8% and the elastic modulus is 120 GPa (17.4 Msi).
What is 30Q130 used for?
- Power transformer cores
- Distribution transformer cores
- Large reactors
- Instrument transformers
Limitations
- Low stiffness — 120 GPa (17.4 Msi), worse than 99% of steel grades
- Limited ductility — 8%, worse than 95% of steel grades
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
- Poor heat conductor — 22 W/m·K (12.7 BTU/hr·ft·°F), worse than 93% of steel grades
- High embodied carbon — 2.6 kg CO₂/kg, worse than 87% of steel grades
30Q130 properties
Typical room-temperature values; bars are the position among steel grades.
Physical3
30Q130 has a density of 7.65 g/cm³ (0.276 lb/in³), lighter than 97% of steel grades. It melts at 1,470°C (2,678 °F).
Mechanical11
30Q130 has a yield strength of 315 MPa (45.7 ksi) and a tensile strength of 345 MPa (50 ksi) — weaker than 82% of steel grades. Elongation at break is 8% and the elastic modulus is 120 GPa (17.4 Msi).
Thermal6
30Q130 is rated for continuous service to 200°C (392 °F). It conducts heat at 22 W/m·K (12.7 BTU/hr·ft·°F), worse than 93% of steel grades. Thermal expansion is 11.6 µm/m·K (6.44 µin/in·°F).
Electrical3
30Q130 conducts electricity at 3.6 % IACS, worse than 85% of steel grades.
Chemical & Environmental2
Corrosion resistance is poor (18/100), better than 83% of steel grades.
Sustainability4
Producing a kilogram of 30Q130 takes about 34 MJ of energy and emits 2.6 kg of CO₂ — more than 82% of steel grades. Typical recycled content is 15%.
Manufacturability7
30Q130's machinability is fair (40/100, worse than 77% of steel grades); weldability fair (35/100); 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. 30Q130 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 30Q130
Is 30Q130 easy to machine?
Normally slit, sheared or laser/wire cut rather than machined; carbide or coated tooling and very sharp punch clearances (2–5 % of thickness) are essential to limit burrs that short laminations.
Can 30Q130 be welded?
TIG/laser tacking of core clamps is possible but the heat-affected zone loses magnetic quality — keep welds out of the flux path and stress-relief anneal if practical.
Can 30Q130 be formed, bent or molded?
Highly anisotropic and brittle; limited to shearing, mitre cutting and the gentle bends used in wound (unicore) transformer cores, always with flux parallel to the rolling direction.
30Q130 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 |
|---|---|---|
| Siraises resistivity, lowers eddy-current loss | 2.8 – 3.4 | 3.1 |
| Cdecarburised in finished product to avoid magnetic ageing | ≤ 0.01 | 0 |
| Mn | 0.03 – 0.2 | 0.08 |
| SMnS inhibitor route residual | ≤ 0.01 | 0 |
| P | ≤ 0.03 | 0.01 |
| Alacid-soluble Al (AlN inhibitor) | ≤ 0.03 | 0.01 |
| N | ≤ 0.01 | 0 |
| Cuinhibitor/residual, route dependent | ≤ 0.3 | 0.05 |
| Fe | balance |
What surface finishes work on 30Q130?
Supplied with an inorganic phosphate C-5 insulating coating; do not paint, plate or anodize — post-cut cores are usually stress-relief annealed then varnish/resin impregnated.
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 30Q130 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- A876
- EN / DIN / Werkstoff-Nr.
- M130-30S
- JIS
- 30P105
How much does 30Q130 cost?
30Q130 is a standard-cost steel ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
30Q130 — frequently asked
What is 30Q130 used for?
30Q130 is typically used for power transformer cores, distribution transformer cores, large reactors and instrument transformers. In short: lowest core loss oriented steel; transformer core grade; directional magnetic properties only.
What is the yield strength of 30Q130?
30Q130 has a typical yield strength of 315 MPa (45.7 ksi) and a tensile strength of 345 MPa (50 ksi) — weaker than 82% of steel grades.
Is 30Q130 easy to machine?
Not especially — machinability is rated fair (40/100, worse than 77% of steel grades). Normally slit, sheared or laser/wire cut rather than machined; carbide or coated tooling and very sharp punch clearances (2–5 % of thickness) are essential to limit burrs that short laminations.
Can 30Q130 be welded?
With care — weldability is rated fair (35/100). TIG/laser tacking of core clamps is possible but the heat-affected zone loses magnetic quality — keep welds out of the flux path and stress-relief anneal if practical.
What surface finishes work on 30Q130?
Supplied with an inorganic phosphate C-5 insulating coating; do not paint, plate or anodize — post-cut cores are usually stress-relief annealed then varnish/resin impregnated.
Can 30Q130 be formed, bent or molded?
Highly anisotropic and brittle; limited to shearing, mitre cutting and the gentle bends used in wound (unicore) transformer cores, always with flux parallel to the rolling direction.
What is the maximum service temperature of 30Q130?
30Q130 is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does 30Q130 cost?
30Q130 is a standard-cost steel ($$), cheaper than about 71% 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 10107 Grain-oriented electrical steel strip and sheet delivered in the fully processed state — CEN (2014)
- ASTM A876 / A343 Grain-oriented electrical steel, fully processed types & core loss test — ASTM (2019)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels (Electrical Steels) — ASM International (1990)
- Grain-oriented electrical steel product catalogue — Baosteel (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.