Where can I find chemical composition charts for stainless steel and carbon steel?

Starlight Tubes provides comprehensive chemical composition tables covering alloying elements (Cr, Ni, Mo, C, Mn, P, S, Si) across 80+ grades including SS 304, 316, ASTM A106, and Inconel 625.

How do I calculate nominal pipe size (NPS) and wall thickness schedule?

Pipe wall thickness is designated by Schedule numbers (SCH 10, 40, 80, 160, XXS) per ASME B36.10M (carbon steel) and ASME B36.19M (stainless steel). Use our dimensional charts to look up outer diameter and wall thickness in mm and inches.

What mechanical test reports are provided in Mill Test Certificates (MTC)?

Our EN 10204 3.1 Mill Test Certificates include tensile strength (MPa/ksi), yield strength (0.2% offset), elongation percentage, hardness (HB/HRB/HRC), and impact testing (Charpy V-Notch at design temperature).

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Chemical Composition Matrix (% by weight)

Standard ladle analysis values in accordance with ASTM, ASME, API, EN/DIN, and UNS specifications.

87 Grades Listed

Grade & Spec	C	Mn	P max	S max	Si	Cr	Ni	Mo	N	Other Elements / Bal.
SS 304UNS S30400 ASTM A312 TP304 / EN 1.4301	0.08 max	2.00 max	0.045	0.030	0.75 max	18.00–20.00	8.00–10.50	—	0.10 max	Fe Bal.
SS 304LUNS S30403 ASTM A312 TP304L / EN 1.4307	0.030 max	2.00 max	0.045	0.030	0.75 max	18.00–20.00	8.00–12.00	—	0.10 max	Fe Bal.
SS 304HUNS S30409 ASTM A312 TP304H (High Temp)	0.04–0.10	2.00 max	0.045	0.030	0.75 max	18.00–20.00	8.00–10.50	—	—	Fe Bal.
SS 316UNS S31600 ASTM A312 TP316 / EN 1.4401	0.08 max	2.00 max	0.045	0.030	0.75 max	16.00–18.00	10.00–14.00	2.00–3.00	0.10 max	Fe Bal.
SS 316LUNS S31603 ASTM A312 TP316L / EN 1.4404	0.030 max	2.00 max	0.045	0.030	0.75 max	16.00–18.00	10.00–14.00	2.00–3.00	0.10 max	Fe Bal.
SS 316HUNS S31609 ASTM A312 TP316H (High Temp)	0.04–0.10	2.00 max	0.045	0.030	0.75 max	16.00–18.00	10.00–14.00	2.00–3.00	—	Fe Bal.
SS 316TiUNS S31635 ASTM A312 / EN 1.4571 / DIN	0.08 max	2.00 max	0.045	0.030	0.75 max	16.00–18.00	10.00–14.00	2.00–3.00	0.10 max	Ti ≥ 5×(C+N) max 0.70
SS 317LUNS S31703 ASTM A312 TP317L / EN 1.4438	0.030 max	2.00 max	0.045	0.030	0.75 max	18.00–20.00	11.00–15.00	3.00–4.00	0.10 max	Fe Bal.
SS 321UNS S32100 ASTM A312 TP321 / EN 1.4541	0.08 max	2.00 max	0.045	0.030	0.75 max	17.00–19.00	9.00–12.00	—	0.10 max	Ti ≥ 5×(C+N) max 0.70
SS 321HUNS S32109 ASTM A312 TP321H (High Temp)	0.04–0.10	2.00 max	0.045	0.030	0.75 max	17.00–19.00	9.00–12.00	—	—	Ti ≥ 4×C max 0.70
SS 347UNS S34700 ASTM A312 TP347 / EN 1.4550	0.08 max	2.00 max	0.045	0.030	0.75 max	17.00–19.00	9.00–13.00	—	—	Nb+Ta ≥ 10×C max 1.00
SS 347HUNS S34709 ASTM A312 TP347H (High Temp)	0.04–0.10	2.00 max	0.045	0.030	0.75 max	17.00–19.00	9.00–13.00	—	—	Nb+Ta ≥ 8×C max 1.10
SS 310SUNS S31008 ASTM A312 TP310S / EN 1.4845	0.08 max	2.00 max	0.045	0.030	1.50 max	24.00–26.00	19.00–22.00	—	—	Refractory / High Temp
SS 310HUNS S31009 ASTM A312 TP310H	0.04–0.10	2.00 max	0.045	0.030	1.50 max	24.00–26.00	19.00–22.00	—	—	Creep Resistant to 1150°C
SS 309SUNS S30908 ASTM A312 TP309S / EN 1.4833	0.08 max	2.00 max	0.045	0.030	1.00 max	22.00–24.00	12.00–15.00	—	—	Oxidation Resistant
SS 904LUNS N08904 ASTM A312 / B677 / EN 1.4539	0.020 max	2.00 max	0.045	0.035	1.00 max	19.00–23.00	23.00–28.00	4.00–5.00	0.10 max	Cu 1.00–2.00, PREN ≥ 34
254 SMO (6-Moly)UNS S31254 ASTM A312 / EN 1.4547	0.020 max	1.00 max	0.030	0.010	0.80 max	19.50–20.50	17.50–18.50	6.00–6.50	0.18–0.22	Cu 0.50–1.00, PREN ≥ 43
AL-6XNUNS N08367 ASTM B688 / A312	0.030 max	2.00 max	0.040	0.030	1.00 max	20.00–22.00	23.50–25.50	6.00–7.00	0.18–0.25	Cu ≤ 0.75, PREN ≥ 44
SS 410UNS S41000 ASTM A268 TP410 / Martensitic	0.08–0.15	1.00 max	0.040	0.030	1.00 max	11.50–13.50	0.75 max	—	—	Heat Treatable Martensitic
SS 420UNS S42000 ASTM A268 TP420 / Martensitic	0.15 min	1.00 max	0.040	0.030	1.00 max	12.00–14.00	0.75 max	—	—	Hardened & Tempered
SS 430UNS S43000 ASTM A268 TP430 / Ferritic	0.12 max	1.00 max	0.040	0.030	1.00 max	16.00–18.00	0.75 max	—	—	Ferritic Non-Hardenable
SS 446UNS S44600 ASTM A268 TP446 / High Cr	0.20 max	1.50 max	0.040	0.030	1.00 max	23.00–27.00	0.50 max	—	0.25 max	Sulfur Oxidation Resistant
17-4PH (AISI 630)UNS S17400 ASTM A564 / A693 / EN 1.4542	0.07 max	1.00 max	0.040	0.030	1.00 max	15.00–17.50	3.00–5.00	—	—	Cu 3.00–5.00, Nb+Ta 0.15–0.45
SS 202UNS S20200 AISI 202 / ASTM A554	0.15 max	7.50–10.00	0.060	0.030	1.00 max	17.00–19.00	4.00–6.00	—	0.25 max	High Manganese Austenitic
Duplex 2205UNS S31803 / S32205 ASTM A790 / EN 1.4462	0.030 max	2.00 max	0.030	0.020	1.00 max	22.00–23.00	4.50–6.50	3.00–3.50	0.14–0.20	PREN ≥ 35 (Cr + 3.3Mo + 16N)
Super Duplex 2507UNS S32750 ASTM A790 / EN 1.4410	0.030 max	1.20 max	0.035	0.020	0.80 max	24.00–26.00	6.00–8.00	3.00–5.00	0.24–0.32	Cu ≤ 0.50, PREN ≥ 42
Super Duplex Zeron 100UNS S32760 ASTM A790 / EN 1.4501	0.030 max	1.00 max	0.030	0.010	1.00 max	24.00–26.00	6.00–8.00	3.00–4.00	0.20–0.30	Cu 0.50–1.00, W 0.50–1.00, PREN ≥ 42
Ferralium 255 (SD 255)UNS S32550 ASTM A790 / EN 1.4507	0.040 max	1.50 max	0.040	0.030	1.00 max	24.00–27.00	4.50–6.50	2.90–3.90	0.10–0.25	Cu 1.50–2.50, PREN ≥ 40
Lean Duplex 2101UNS S32101 ASTM A790 / EN 1.4162	0.040 max	4.00–6.00	0.040	0.030	1.00 max	21.00–22.00	1.35–1.70	0.10–0.80	0.20–0.25	Cu 0.10–0.80, Fe Bal.
Lean Duplex 2304UNS S32304 ASTM A790 / EN 1.4362	0.030 max	2.00 max	0.035	0.015	1.00 max	21.50–24.50	3.00–5.50	0.05–0.60	0.05–0.20	Cu 0.05–0.60, PREN ≥ 24
Hyper Duplex 2707UNS S32707 ASTM A790 / EN 1.4658	0.030 max	1.50 max	0.035	0.010	0.50 max	26.00–29.00	5.50–9.50	4.00–5.00	0.30–0.50	Co 0.50–2.00, PREN ≥ 48
ASTM A106 Gr. AUNS K02501 ASTM A106 Seamless (Carbon)	0.25 max	0.27–0.93	0.035	0.035	0.10 min	0.40 max	0.40 max	0.15 max	—	Cu 0.40 max, V 0.08 max
ASTM A106 Gr. BUNS K03006 ASTM A106 Seamless (High Temp)	0.30 max	0.29–1.06	0.035	0.035	0.10 min	0.40 max	0.40 max	0.15 max	—	Cu 0.40 max, V 0.08 max
ASTM A106 Gr. CUNS K03501 ASTM A106 Seamless (High Tensile)	0.35 max	0.29–1.06	0.035	0.035	0.10 min	0.40 max	0.40 max	0.15 max	—	Cu 0.40 max, V 0.08 max
ASTM A53 Gr. BUNS K03005 ASTM A53 Seamless / ERW	0.30 max	1.20 max	0.050	0.045	—	0.40 max	0.40 max	0.15 max	—	Cu 0.40 max, V 0.08 max
ASTM A333 Gr. 1UNS K03008 ASTM A333 Low Temp (-45°C)	0.30 max	0.40–1.06	0.025	0.025	0.10 min	—	—	—	—	Low Temp Impact Tested
ASTM A333 Gr. 6UNS K03022 ASTM A333 Low Temp (-45°C)	0.30 max	0.29–1.06	0.025	0.025	0.10 min	—	—	—	—	Charpy V-Notch ≥ 27J at -45°C
ASTM A333 Gr. 3UNS K31918 ASTM A333 3.5% Ni (-100°C)	0.19 max	0.31–0.64	0.025	0.025	0.18–0.37	—	3.18–3.82	—	—	Cryogenic Service to -100°C
ASTM A335 P5UNS K41545 ASTM A335 5Cr-0.5Mo Alloy	0.15 max	0.30–0.60	0.025	0.025	0.50 max	4.00–6.00	—	0.45–0.65	—	Refinery Desulfurization
ASTM A335 P9UNS K90941 ASTM A335 9Cr-1Mo Alloy	0.15 max	0.30–0.60	0.025	0.025	0.25–1.00	8.00–10.00	—	0.90–1.10	—	High Temp Steam Service
ASTM A335 P11UNS K11597 ASTM A335 1.25Cr-0.5Mo Alloy	0.05–0.15	0.30–0.60	0.025	0.025	0.50–1.00	1.00–1.50	—	0.44–0.65	—	Power Plant Piping
ASTM A335 P22UNS K21590 ASTM A335 2.25Cr-1Mo Alloy	0.05–0.15	0.30–0.60	0.025	0.025	0.50 max	1.90–2.60	—	0.87–1.13	—	High Pressure Boiler Piping
ASTM A335 P91UNS K91560 ASTM A335 9Cr-1Mo-V Creep	0.08–0.12	0.30–0.60	0.020	0.010	0.20–0.50	8.00–9.50	0.40 max	0.85–1.05	0.03–0.07	V 0.18–0.25, Nb 0.06–0.10, Al ≤ 0.02
ASTM A335 P92UNS K92460 ASTM A335 9Cr-0.5Mo-1.8W	0.07–0.13	0.30–0.60	0.020	0.010	0.50 max	8.50–9.50	0.40 max	0.30–0.60	0.03–0.07	W 1.50–2.00, V 0.15–0.25, Nb 0.04–0.09, B 0.001–0.006
ASTM A179UNS K01200 ASTM A179 Seamless Heat Exch.	0.06–0.18	0.27–0.63	0.035	0.035	—	—	—	—	—	Cold Drawn Condenser Tube
ASTM A192UNS K01201 ASTM A192 High-Pressure Boiler	0.06–0.18	0.27–0.63	0.035	0.035	0.25 max	—	—	—	—	High Pressure Steam Tube
ASTM A210 Gr. A1UNS K02707 ASTM A210 Boiler / Superheater	0.27 max	0.93 max	0.035	0.035	0.10 min	—	—	—	—	Medium-Carbon Steel
ASTM A210 Gr. CUNS K03501 ASTM A210 High-Pressure Boiler	0.35 max	0.29–1.06	0.035	0.035	0.10 min	—	—	—	—	Medium-Carbon High Tensile
API 5L Grade BUNS K03014 API 5L PSL 1 / PSL 2 Line Pipe	0.26 max	1.20 max	0.030	0.030	0.45 max	—	—	—	—	CEpcm ≤ 0.25, CEIIW ≤ 0.43
API 5L X42UNS K03015 API 5L PSL 2 High Yield	0.24 max	1.30 max	0.025	0.015	0.45 max	—	—	—	—	Micro-alloyed V, Nb, Ti
API 5L X46UNS K03016 API 5L PSL 2 Transmission	0.24 max	1.40 max	0.025	0.015	0.45 max	—	—	—	—	CEpcm ≤ 0.25
API 5L X52UNS K03017 API 5L PSL 2 High Yield	0.22 max	1.40 max	0.025	0.015	0.45 max	—	—	—	—	Nb+V+Ti ≤ 0.15
API 5L X56UNS K03018 API 5L PSL 2 Gas Pipeline	0.22 max	1.40 max	0.025	0.015	0.45 max	—	—	—	—	Sour Service Available
API 5L X60UNS K03019 API 5L PSL 2 High Yield	0.22 max	1.40 max	0.025	0.015	0.45 max	—	—	—	—	TMCP / Normalized
API 5L X65UNS K03020 API 5L PSL 2 Sour / NACE	0.18 max	1.60 max	0.020	0.010	0.45 max	—	—	—	—	Sour Service / HIC Tested
API 5L X70UNS K03021 API 5L PSL 2 Heavy Line Pipe	0.16 max	1.70 max	0.020	0.010	0.45 max	—	—	—	—	TMCP Accelerated Cooling
API 5L X80UNS K03023 API 5L PSL 2 Ultra High Yield	0.12 max	1.85 max	0.015	0.005	0.45 max	0.30 max	0.50 max	0.35 max	—	Nb+V+Ti ≤ 0.15
ASTM A671 / A672EFW Pressure ASTM A671/A672 EFW Welded	0.20–0.28	0.60–1.20	0.035	0.035	0.15–0.40	—	—	—	—	Large Diameter Pressure Pipe
Nickel 200UNS N02200 ASTM B161 / B163 (99.6% Ni)	0.15 max	0.35 max	—	0.010	0.35 max	—	99.0 min	—	—	Cu 0.25 max, Fe 0.40 max
Nickel 201UNS N02201 ASTM B161 / B163 (Low Carbon)	0.02 max	0.35 max	—	0.010	0.35 max	—	99.0 min	—	—	Caustic Service up to 600°C
Monel 400UNS N04400 ASTM B165 / B163 / DIN 2.4360	0.30 max	2.00 max	—	0.024	0.50 max	—	63.0 min	—	—	Cu 28.00–34.00, Fe 2.50 max
Monel K500UNS N05500 ASTM B865 / DIN 2.4375	0.18 max	1.50 max	—	0.010	0.50 max	—	63.0 min	—	—	Cu 27.00–33.00, Al 2.30–3.15, Ti 0.35–0.85
Inconel 600UNS N06600 ASTM B167 / B163 / DIN 2.4816	0.15 max	1.00 max	—	0.015	0.50 max	14.00–17.00	72.0 min	—	—	Fe 6.00–10.00, Cu 0.50 max
Inconel 601UNS N06601 ASTM B167 / DIN 2.4851	0.10 max	1.00 max	—	0.015	0.50 max	21.00–25.00	58.00–63.00	—	—	Al 1.00–1.70, Fe Bal.
Inconel 625 (Gr. 1)UNS N06625 ASTM B444 Gr. 1 / DIN 2.4856	0.10 max	0.50 max	0.015	0.015	0.50 max	20.00–23.00	58.0 min	8.00–10.00	—	Nb+Ta 3.15–4.15, Fe 5.0 max, Al ≤ 0.40
Inconel 625 (Gr. 2)UNS N06625 ASTM B444 Gr. 2 (Solution Tr.)	0.10 max	0.50 max	0.015	0.015	0.50 max	20.00–23.00	58.0 min	8.00–10.00	—	Nb+Ta 3.15–4.15, High Temp Creep
Inconel 718UNS N07718 ASTM B637 / B670 / DIN 2.4668	0.08 max	0.35 max	0.015	0.015	0.35 max	17.00–21.00	50.00–55.00	2.80–3.30	—	Nb+Ta 4.75–5.50, Ti 0.65–1.15, Al 0.20–0.80
Inconel 725UNS N07725 ASTM B805 UNS N07725	0.03 max	0.35 max	0.015	0.010	0.20 max	19.00–22.50	55.00–59.00	7.00–9.50	—	Nb 2.75–4.00, Ti 1.00–1.70, Al ≤ 0.35
Inconel X-750UNS N07750 ASTM B637 / DIN 2.4669	0.08 max	1.00 max	—	0.010	0.50 max	14.00–17.00	70.0 min	—	—	Ti 2.25–2.75, Al 0.40–1.00, Nb+Ta 0.70–1.20
Incoloy 800UNS N08800 ASTM B407 / B163 / DIN 1.4876	0.10 max	1.50 max	0.030	0.015	1.00 max	19.00–23.00	30.00–35.00	—	—	Al 0.15–0.60, Ti 0.15–0.60, Fe ≥ 39.5
Incoloy 800HUNS N08810 ASTM B407 / DIN 1.4958	0.05–0.10	1.50 max	0.030	0.015	1.00 max	19.00–23.00	30.00–35.00	—	—	Al+Ti 0.60–1.20, Grain Size ≥ 5
Incoloy 800HTUNS N08811 ASTM B407 / DIN 1.4959	0.06–0.10	1.50 max	0.030	0.015	1.00 max	19.00–23.00	30.00–35.00	—	—	Al+Ti 0.85–1.20, Max Creep Rupture
Incoloy 825UNS N08825 ASTM B423 / B163 / DIN 2.4858	0.05 max	1.00 max	—	0.030	0.50 max	19.50–23.50	38.00–46.00	2.50–3.50	—	Cu 1.50–3.00, Ti 0.60–1.20, Al ≤ 0.20
Hastelloy C276UNS N10276 ASTM B622 / B619 / DIN 2.4819	0.010 max	1.00 max	0.040	0.030	0.08 max	14.50–16.50	Balance	15.00–17.00	—	W 3.00–4.50, Fe 4.00–7.00, Co ≤ 2.50
Hastelloy C22UNS N06022 ASTM B622 / DIN 2.4602	0.015 max	0.50 max	0.020	0.010	0.08 max	20.00–22.50	Balance	12.50–14.50	—	W 2.50–3.50, Fe 2.00–6.00, Co ≤ 2.50
Hastelloy B2 / B3UNS N10665 / N10675 ASTM B622 / DIN 2.4617	0.010 max	1.00 max	0.030	0.010	0.10 max	1.00–3.00	Balance	26.00–30.00	—	Fe 1.00–3.00, Pure HCl Specialist
Hastelloy XUNS N06002 ASTM B622 / DIN 2.4665	0.05–0.15	1.00 max	0.040	0.030	1.00 max	20.50–23.00	Balance	8.00–10.00	—	Fe 17.00–20.00, Co 0.50–2.50, W 0.20–1.00
Alloy 20UNS N08020 ASTM B729 / B464 / Carpenter 20	0.07 max	2.00 max	0.045	0.035	1.00 max	19.00–21.00	32.00–38.00	2.00–3.00	—	Cu 3.00–4.00, Nb 8×C to 1.00, Fe Bal.
Alloy 59UNS N06059 ASTM B622 / DIN 2.4605	0.010 max	0.50 max	0.015	0.010	0.10 max	22.00–24.00	Balance	15.00–16.50	—	Al 0.10–0.40, Fe ≤ 1.50, PREN ≥ 76
Titanium Gr. 2UNS R50400 ASTM B861 / B338 (Pure Ti)	0.08 max	—	—	—	—	—	—	—	0.03 max	Ti Bal. (≥99.2%), Fe ≤ 0.30, O ≤ 0.25, H ≤ 0.015
Titanium Gr. 5 (Ti-6Al-4V)UNS R56400 ASTM B861 (High Strength)	0.08 max	—	—	—	—	—	—	—	0.05 max	Ti Bal., Al 5.50–6.75, V 3.50–4.50, Fe ≤ 0.40
Cupro-Nickel 90/10UNS C70600 ASTM B111 / B466 / DIN 2.0872	0.05 max	1.00 max	0.020	0.020	—	—	9.00–11.00	—	—	Cu Bal. (≥86.5%), Fe 1.00–1.80, Pb ≤ 0.02, Zn ≤ 0.50
Cupro-Nickel 70/30UNS C71500 ASTM B111 / B466 / DIN 2.0882	0.05 max	1.00 max	0.020	0.020	—	—	29.00–33.00	—	—	Cu Bal. (≥65.0%), Fe 0.40–1.00, Pb ≤ 0.02, Zn ≤ 0.50
Copper DHPUNS C12200 ASTM B88 / B75 / EN CW024A	—	—	0.015–0.040	—	—	—	—	—	—	Cu ≥ 99.90% (Deoxidized High Phosphorus)
Aluminium 6061-T6UNS A96061 ASTM B241 / B221 (Structural)	—	0.15 max	—	—	0.40–0.80	0.04–0.35	—	—	—	Al Bal. (95.8–98.6), Mg 0.80–1.20, Cu 0.15–0.40, Fe ≤ 0.70
Aluminium 6063-T6UNS A96063 ASTM B241 / B221 (Extruded)	—	0.10 max	—	—	0.20–0.60	0.10 max	—	—	—	Al Bal. (97.5–99.3), Mg 0.45–0.90, Fe ≤ 0.35, Cu ≤ 0.10
Aluminium 5083-H111UNS A95083 ASTM B241 (Marine Grade)	—	0.40–1.00	—	—	0.40 max	0.05–0.25	—	—	—	Al Bal. (92.7–94.9), Mg 4.00–4.90, Fe ≤ 0.40, Zn ≤ 0.25

Values represent weight percentage (%) max unless a specific range is stated. Test certificates (EN 10204 3.1) provided for all mill lots with exact Optical Emission Spectrometry (OES) / PMI heat analysis.

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