Steel SC410-SR (Stress relieved)
Heat-treated state
JIS G5101
Use when dimensional stability after machining or weld repair matters but full re-austenitising is not needed.
Values for the SR 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 |
SRThis page 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 |
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-SR?
SC410-SR is SC410 heat treated to SR — use when dimensional stability after machining or weld repair matters but full re-austenitising is not needed. SC410-SR has a yield strength of 225 MPa (32.6 ksi) and a tensile strength of 430 MPa (62.4 ksi) — weaker than 97% of steel grades. Elongation at break is 23% and the elastic modulus is 205 GPa (29.7 Msi). SC410-SR 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; SR is available on request or by drawing note.
Advantages
- Easy to machine — 63/100, better than 92% of steel grades
- 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
- Low strength — 225 MPa (32.6 ksi), worse than 97% of steel grades
- Hard to polish — 45/100, worse than 84% of steel grades
- Limited formability — 20/100, worse than 80% of steel grades
- Low fracture toughness — 65 MPa·√m (59.2 ksi·√in), worse than 75% of steel grades
SC410-SR properties
Typical room-temperature values for SC410-SR; 22 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-SR 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-SR has a yield strength of 225 MPa (32.6 ksi) and a tensile strength of 430 MPa (62.4 ksi) — weaker than 97% of steel grades. Elongation at break is 23% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
SC410-SR is rated for continuous service to 425°C (797 °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-SR 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-SR 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-SR's machinability is good (63/100, better than 92% 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-SR
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-SR — frequently asked
What is SC410-SR used for?
SC410-SR 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-SR?
SC410-SR has a typical yield strength of 225 MPa (32.6 ksi) and a tensile strength of 430 MPa (62.4 ksi) — weaker than 97% of steel grades. Strength varies by condition: see the 6 listed tempers.
Is SC410-SR easy to machine?
Reasonably — machinability is rated good (63/100, better than 92% 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-SR 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-SR?
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-SR 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-SR?
SC410-SR is rated for continuous use to about 425°C (797 °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.