Steel SC410-QT (Quenched and tempered)
Heat-treated state
JIS G5101
Optional upgrade for thinner sections needing higher yield and wear resistance than the JIS minimum class.
Values for the QT condition
Other SC410 tempers and conditions
SC410 is listed in 6 conditions; see the grade overview at SC410.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As fabricated | Cheapest condition for non-critical, low-stress brackets and covers where residual stress and coarse as-cast structure are acceptable. | 215 | 420 | 20 | 128 HB | 10 % IACS |
Stress relieved | Use when dimensional stability after machining or weld repair matters but full re-austenitising is not needed. | 225 | 430 | 23 | 125 HB | 10 % IACS |
Solution annealed | Softest, most machinable and most uniform condition; pick it for heavily machined castings or before further heat treatment. | 225 | 425 | 26 | 120 HB | — |
NDefault Normalized | Standard commercial delivery condition: refines the as-cast grain, gives the best strength/toughness balance at the JIS minimums. | 245 | 450 | 24 | 130 HB | — |
Normalized and tempered | Adds a temper after normalizing to relieve stress and lift impact energy for pressure-retaining or vibrating parts. | 255 | 460 | 25 | 135 HB | 10 % IACS |
QTThis page Quenched and tempered | Optional upgrade for thinner sections needing higher yield and wear resistance than the JIS minimum class. | 360 | 560 | 20 | 165 HB | — |
What is SC410-QT?
SC410-QT is SC410 heat treated to QT — optional upgrade for thinner sections needing higher yield and wear resistance than the JIS minimum class. SC410-QT has a yield strength of 360 MPa (52.2 ksi) and a tensile strength of 560 MPa (81.2 ksi) — weaker than 72% of steel grades. Elongation at break is 20% and the elastic modulus is 205 GPa (29.7 Msi). SC410-QT has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,425°C (2,597 °F). N is the default condition FabDigit quotes; QT is available on request or by drawing note.
Advantages
- Conducts heat well — 49 W/m·K (28.3 BTU/hr·ft·°F), better than 83% of steel grades
- High electrical conductivity — 10 % IACS, better than 83% of steel grades
- Readily welded — 78/100, better than 78% of steel grades
Limitations
- Hard to polish — 45/100, worse than 84% of steel grades
- Limited formability — 20/100, worse than 80% of steel grades
SC410-QT properties
Typical room-temperature values for SC410-QT; 11 are specific to this condition. Other listed values are SC410 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
SC410-QT has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,425°C (2,597 °F).
Mechanical15
SC410-QT has a yield strength of 360 MPa (52.2 ksi) and a tensile strength of 560 MPa (81.2 ksi) — weaker than 72% of steel grades. Elongation at break is 20% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
SC410-QT 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
SC410-QT conducts electricity at 10 % IACS, better than 83% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of SC410-QT takes about 30 MJ of energy and emits 2.1 kg of CO₂ — more than 56% of steel grades. Typical recycled content is 85%.
Manufacturability8
SC410-QT's machinability is good (55/100, better than 62% of steel grades); weldability very good (78/100); formability poor (20/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with SC410-QT
Is SC410 easy to machine?
Machines like ~0.3 %C carbon steel (≈65 % of AISI 1212); anneal or normalize first and expect hard skin/sand inclusions on unblasted surfaces.
Can SC410 be welded?
Readily weldable by SMAW/GMAW/SAW with E70xx-class consumables; preheat 100–150 °C on heavy sections and stress relieve at 600–650 °C after major weld repair.
Can SC410 be formed, bent or molded?
Sand- or shell-cast with generous risering (long freezing range, ~2 % solidification shrinkage); design 3–5 mm min wall and avoid abrupt section changes to prevent hot tears.
What surface finishes work on SC410?
Shot blast to SA 2.5 then prime/paint, zinc-rich coat, phosphate or zinc/nickel plate — bare surfaces rust quickly; not anodizable.
SC410 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 |
|---|---|---|
| CNot limited by JIS G5101; typical foundry aim to meet 410 MPa class | ≤ 0.35 | 0.28 |
| SiTypical foundry practice | ≤ 0.6 | 0.4 |
| MnTypical foundry practice | ≤ 1 | 0.7 |
| PJIS G5101 specified limit | ≤ 0.04 | 0.02 |
| SJIS G5101 specified limit | ≤ 0.04 | 0.02 |
| Fe | balance | — |
SC410-QT — frequently asked
What is SC410-QT used for?
SC410-QT is typically used for valve bodies, pump casings, machinery housings and flanges. In short: most weldable JIS cast steel; WCA strength tier; lowest-strength SC grade.
What is the yield strength of SC410-QT?
SC410-QT has a typical yield strength of 360 MPa (52.2 ksi) and a tensile strength of 560 MPa (81.2 ksi) — weaker than 72% of steel grades. Strength varies by condition: see the 6 listed tempers.
Is SC410-QT easy to machine?
Reasonably — machinability is rated good (55/100, better than 62% of steel grades). Machines like ~0.3 %C carbon steel (≈65 % of AISI 1212); anneal or normalize first and expect hard skin/sand inclusions on unblasted surfaces.
Can SC410-QT be welded?
Yes — weldability is rated very good (78/100). Readily weldable by SMAW/GMAW/SAW with E70xx-class consumables; preheat 100–150 °C on heavy sections and stress relieve at 600–650 °C after major weld repair.
What surface finishes work on SC410-QT?
Shot blast to SA 2.5 then prime/paint, zinc-rich coat, phosphate or zinc/nickel plate — bare surfaces rust quickly; not anodizable.
Can SC410-QT be formed, bent or molded?
Sand- or shell-cast with generous risering (long freezing range, ~2 % solidification shrinkage); design 3–5 mm min wall and avoid abrupt section changes to prevent hot tears.
What is the maximum service temperature of SC410-QT?
SC410-QT 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 SC410-N and SC410-QT?
N is the default condition — standard commercial delivery condition: refines the as-cast grain, gives the best strength/toughness balance at the JIS minimums. QT: optional upgrade for thinner sections needing higher yield and wear resistance than the JIS minimum class. Yield strength is 245 MPa in N versus 360 MPa in QT.
Sources
- JIS G 5101 — Carbon steel castings — Japanese Industrial Standards Committee (1991)
- ASTM A216/A27 — Carbon steel castings (comparison grades WCA, 60-30) — ASTM International (2018)
- Steel Castings Handbook, 6th ed. — Steel Founders' Society of America / ASM International (1995)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- GB/T 11352 — (ZG230-450 comparison) — SAC (2009)
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.