Physical and Mechanical Properties of Metallic Materials

2026/06/15

Physical Properties

Metallic Materials	Density	Young's modulus × 10³ [N/mm²]	Shear modulus × 10³ [N/mm²]	Thermal conductivity [W/(m·K)]	Coefficient of thermal expansion × 10⁻⁶ [1/K]
Low-carbon steel (0.08% C – 0.12% C)	7.86	206	79	57–60	11.3–11.6
Medium-carbon steel (0.40C–0.50C)	7.84	205	82	44	10.7
High-carbon steel (0.8C – 1.6C)	7.81–7.83	196–202	80–81	37–43	9.6–10.9
Chromium steel (SCr430)	7.84	̶	̶	44.8	12.6 (300–470 K)
Chromium-molybdenum steel (SCM440)	7.83	̶	̶	42.7	12.3
Martensitic stainless steel (SUS410)	7.80	200	̶	24.9	9.9
Austenitic stainless steel (SUS304)	8.03	197	73.7	15	17.3
Tool steel (SKD6)	7.75	206	82	42.2 (373 k)	10.8
Grey cast iron (FC)	7.05–7.3	73.6 to 127.5	28.4–39.2	44 to 58.6	9.2 to 11.8
Spheroidal graphite cast iron (FCD)	7.10	161	78	33.5 to 37.7	10
Duralumin (A2017-T4)	2.79	69	̶	201	23.4
Super Duralumin (A2024-T4)	2.77	74	29	121	23.2
Super-high-strength duralumin (A7075-T6)	2.80	72	28	130	23.6
Rautan (AC2A-T6)	2.79	72	̶	121	24.0
Silmin (AC3A-F)	2.66	71	̶	121	20.4
Aluminum Casting Alloy (AC4CH-T6)	2.68	72	̶	151	21.5
Aluminum die-casting alloy (ADC12)	2.70	72	̶	100	21.0
Zinc die-casting alloy (ZDC-2)	6.60	89	̶	113	27.4

Metallic Materials	Yield Strength [N/mm²]	Tensile strength [N/mm²]	Hardness [HB]
S20C-N	245	402	116–174
S30C-N	284	471	137–197
S30C-H	333	539	152–212
S45C-N	343	569	167–229
S45-H	490	686	201–269
SS400	216	402–510	̶
SCM420	̶	932	262–352
SCM435	785	932	269–331
SUS303	206	520	187 or less
SUS304	206	520	200 or less
FC200	̶	200	223 or less
FC250	̶	250	241 or less
FC300	̶	300	262 or less
FC350	̶	350	277 or less
FCD400	250	400	201 or less
FCD450	280	450	143 to 217
FCD500	320	500	170–241
A2014-T4	245	412	̶
A2017-T4	196	353	̶
A7075-T6	471	539	̶